tag:blogger.com,1999:blog-5843294670881242012.post3495985781408425930..comments2023-05-15T19:59:04.774+08:00Comments on 2011 S1-02 Maths Blog: June Vacation Chap 9.2 RATE (L5) Can he catch up with her?Loh Kwai Yinhttp://www.blogger.com/profile/06503397685892227762noreply@blogger.comBlogger22125tag:blogger.com,1999:blog-5843294670881242012.post-71268104450864045142011-06-28T17:56:31.455+08:002011-06-28T17:56:31.455+08:001. 6.45am
2. It is impossible to do this question ...1. 6.45am<br />2. It is impossible to do this question as it did not specify the rate of speed grace was walking at.Danielhttps://www.blogger.com/profile/17856172970102075884noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-65561650238604993202011-06-28T07:11:37.373+08:002011-06-28T07:11:37.373+08:00Some of you had made good attempts to explain your...Some of you had made good attempts to explain your thinking in a very systematic manner. Well done!<br /><br />While almost all working and answers point towards 6.45 am as the answer, there is a piece of information (available in the question) that none of you 'discovered' is a critical factor that determines the possible answer.<br /><br />Has anyone got the idea what's that piece of un-used info and why it's important?Loh Kwai Yinnoreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-46676124296481692102011-06-27T14:22:02.581+08:002011-06-27T14:22:02.581+08:00Q1) 6.40: G=10 S=0
6.41: G=11 S=3
6...Q1) 6.40: G=10 S=0<br /> 6.41: G=11 S=3<br /> 6.42 G=12 S=6<br /> 6.43: G=13 S=9<br /> 6.44: G=14 S=12<br /> 6.45: G-15 S=15<br /><br />Ans: 6.45 am<br /><br />2)It is not possible to answer as the speed is not given.~Jia En~https://www.blogger.com/profile/01991803611113185941noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-9667468146017455002011-06-27T14:08:02.126+08:002011-06-27T14:08:02.126+08:00Q1)Let x a unit of distance covered every 10 mins....Q1)Let x a unit of distance covered every 10 mins.<br />At 6.30: Grace: 0 Shamus: 0<br />At 6.40: Grace: x Shamus: 0<br />At 6.50: Grace: 2x Shamus: 3x <br />(If Shamus continued to cycle until 6.50, he would have passed Grace. Thus, it must have been earlier than 6.50)<br />At 6.45: Grace: 1.5x Shamus: 1.5x (Since their distance covered is the same, this must be the time that Shamus caught up with Grace)<br /><br />Q2)The speed is not given, so we can't find the answer.Dawn Emo Bunhttps://www.blogger.com/profile/10606052520171279155noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-14359439754621703952011-06-27T11:55:21.188+08:002011-06-27T11:55:21.188+08:001) 6.45 a.m.
2) It is not possible as their respec...1) 6.45 a.m.<br />2) It is not possible as their respective speeds are not given.Cowan Honoreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-79489507394055175872011-06-27T10:45:46.580+08:002011-06-27T10:45:46.580+08:00Q1) 6:45am
Q2) There is no information for Grace&#...Q1) 6:45am<br />Q2) There is no information for Grace's Speed,so the answer is unknownleightonhttps://www.blogger.com/profile/12526334651244932931noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-49191311012265746742011-06-26T17:24:05.939+08:002011-06-26T17:24:05.939+08:00Question 1:
Let the distance Grace travelled in 1 ...Question 1:<br />Let the distance Grace travelled in 1 min is x<br />Shamus travels 3x in 1 min.<br />6.30 a.m to 6.40 a.m is 10 mins, in which Grace would have already travelled 10x.<br />6.41 a.m - Grace: 11x // Shamus: 3x<br />6.42 a.m - Grace: 12x // Shamus: 6x<br />6.43 a.m - Grace: 13x // Shamus: 9x<br />6.44 a.m - Grace: 14x // Shamus: 12x<br />6.45 a.m - Grace: 15x // Shamus: 15x<br /><br />Question 2: It would not be possible as speed is not given for neither Grace nor Shamus.Kaung Myat Thuhttps://www.blogger.com/profile/16557375558466629655noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-72374989038000711172011-06-25T15:04:04.236+08:002011-06-25T15:04:04.236+08:00Q1: At 6:45am
Q2: The speed was not givenQ1: At 6:45am<br />Q2: The speed was not givensiddharth gohilhttps://www.blogger.com/profile/04492110016466923810noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-56048669128328024502011-06-24T19:16:07.091+08:002011-06-24T19:16:07.091+08:00Q1) 10 minutes after 6.30am is 6.40am
Grace travel...Q1) 10 minutes after 6.30am is 6.40am<br />Grace travelling at x per minute, Shamus 3x a minute.<br />Since Grace have already traveled 10x by 6.40am~<br />6.41am -> Grace: 11x; Shamus: 3x<br />6.42am -> Grace: 12x; Shamus: 6x<br />6.43am -> Grace: 13x; Shamus: 9x<br />6.44am -> Grace: 14x; Shamus: 12x<br />6.45am -> Grace: 15x; Shamus: 15x<br />It was 6.45am when Shamus caught up with Grace.<br /><br />Q2) The speed of Grace was not included in the question, thus we cannot solve Q2Christabel~♥^^https://www.blogger.com/profile/11325007350234270002noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-38446273460028364692011-06-24T17:00:48.662+08:002011-06-24T17:00:48.662+08:00Q1) 6:45am
Q2) There is no information for Grace&#...Q1) 6:45am<br />Q2) There is no information for Grace's Speed, so we cannot find the answer.Benhttps://www.blogger.com/profile/09906369322864820996noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-8519482617210834522011-06-24T14:47:16.682+08:002011-06-24T14:47:16.682+08:00Q1) 6:45am
Q2) No speed given thus impossible to g...Q1) 6:45am<br />Q2) No speed given thus impossible to get answerRyan Yeohttps://www.blogger.com/profile/01882587396396790457noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-34459779605046429542011-06-23T10:09:59.827+08:002011-06-23T10:09:59.827+08:001)Shamus caught up with grace at 6.45am
2)Grace&#...1)Shamus caught up with grace at 6.45am<br /><br />2)Grace's speed was not mentioned so we cannot get the answer.Akhilahttps://www.blogger.com/profile/06017690768268649431noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-9546034484004775692011-06-19T11:01:23.674+08:002011-06-19T11:01:23.674+08:00Q1: At 6:45am
Q2: The speed was not given in the q...Q1: At 6:45am<br />Q2: The speed was not given in the question therefore we cannot find the answerRyan Siohttps://www.blogger.com/profile/06409788765804252578noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-25335243059528218682011-06-19T09:09:39.994+08:002011-06-19T09:09:39.994+08:00Q1.Let x be a part of the total distance.
6.31: G...Q1.Let x be a part of the total distance.<br />6.31: Grace:1x Shamus:-<br />6.41: Grace:11x Shamus:3x<br />6.42: Grace:12x Shamus:6x<br />6.43: Grace:13x Shamus:9x<br />6.44: Grace:14x Shamus:12x<br />6.45: Grace:15x Shamus:15x<br />Shamus caught up with Grace at 6.45am.<br /><br />Q2. With only the given information, it is not possible to find as Grace's speed is not given.Devanshihttps://www.blogger.com/profile/07273217001067390557noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-36627022400778591192011-06-16T21:20:26.430+08:002011-06-16T21:20:26.430+08:001. 6.45am
2.speed is not mentioned so it is not po...1. 6.45am<br />2.speed is not mentioned so it is not possible.Joshua Tanhttps://www.blogger.com/profile/08282547486445605917noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-20090946067705312612011-06-16T08:46:45.717+08:002011-06-16T08:46:45.717+08:001. 6.45
2. Grace's speed is not given as t i r...1. 6.45<br />2. Grace's speed is not given as t i required to solve the problem.Mitsunari Ishidahttps://www.blogger.com/profile/00114616882520531034noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-9193501889393936602011-06-13T16:43:37.648+08:002011-06-13T16:43:37.648+08:00Q1: What time was it when Shamus caught up with Gr...Q1: What time was it when Shamus caught up with Grace?<br />6.45am<br />Q2: If the school is 800m from home, did Shamus reach Grace before she arrived at school?<br />The speed is needed to find out the answer but speed is not given.Dexter Limhttps://www.blogger.com/profile/03203376869310785136noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-10687940715249436092011-06-13T10:37:08.639+08:002011-06-13T10:37:08.639+08:00Q1: 6.45am
Q2: Speed is not given in the question,...Q1: 6.45am<br />Q2: Speed is not given in the question, thus it is not possible to find the answer.Mervinnoreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-74274515048107897892011-06-12T17:08:32.278+08:002011-06-12T17:08:32.278+08:00Q1. Let X be part of the total distance
Grace at 1...Q1. Let X be part of the total distance<br />Grace at 11X, Shamus 3X. 6.41a.m.<br />Grace at 12X, Shamus 6X. 6.42a.m.<br />Grace at 13X, Shamus 9X. 6.43a.m.<br />Grace at 14X, Shamus 12X. 6.44a.m.<br />Grace at 15X, Shamus 15X. 6.45a.m.<br />Answer 6.45a.m.<br /><br />Q2. Speed has not been provided, thus we will not be able to find the answer.Matthew Gohhttps://www.blogger.com/profile/17619431470424620558noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-26778512297801286732011-06-11T13:08:58.761+08:002011-06-11T13:08:58.761+08:001. y-a part of the total distance
When Grace trave...1. y-a part of the total distance<br />When Grace travelled 11y, Shamus would have travelled 3y. Time would be 6.41am.<br />At 6.43am, Grace would have travelled 13y, while Shamus would have travelled 9y.<br />This pattern shows that the gap between them is closing up.<br />At 6.45am, Grace would have travelled 15y and Shamus would have caught up with her after travelling 15y too.<br />Answer: 6.45am<br /><br />2. As time was given only, no information on distance or speed was provided so, it is not possible to find out the answer to this question.Amelia Panghttps://www.blogger.com/profile/07526550306972104728noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-22354497601144055362011-06-11T10:28:39.309+08:002011-06-11T10:28:39.309+08:00Q1.
Grace - 6.30am
Shamus - 6.40am
Grace - x m/min...Q1.<br />Grace - 6.30am<br />Shamus - 6.40am<br />Grace - x m/min<br />Shamus - 3x m/min<br />In ten minutes, Grace - 10x<br />6.41am - Grace 11x Shamus - 3x<br />6.42am - Grace 12x Shamus - 6x<br />6.43am - Grace 13x Shamus - 9x<br />6.44am - Grace 14x Shamus - 12x<br />6.45am - Grace 15x Shamus - 15x Ans: 6.45am<br />Alternative Method: <br />Multiples of 3 : 3,6,9,12,15,18<br />Ten Minutes: Grace - 10x<br />11,12,13,14,15 -they met at 15x (dist.)<br />15x = 15mins(Grace) 6.30am + 15mins = 6.45am Ans: 6.45am<br /><br />Q2. The speed is not provided so we cannot find out the answer to this question.Tay Ming Yihttps://www.blogger.com/profile/09743934751086968629noreply@blogger.comtag:blogger.com,1999:blog-5843294670881242012.post-80136258886443864272011-06-08T14:28:22.170+08:002011-06-08T14:28:22.170+08:00Q1. 6.45am
Q2. Speed is not indicated, so it is no...Q1. 6.45am<br />Q2. Speed is not indicated, so it is not possible to find out.luke-john leehttps://www.blogger.com/profile/16998196081287221029noreply@blogger.com