2011 S1-02 Maths Blog
(Viva Voce) Chap 9 Exercise 9 Question 10
Towns P and Q are 120km apart. Mr tan drove from P to Q and was scheduled to reach Q after 2 hours. His average speed was 54km/h for the first 40 minutes.
a)What was his average speed for he remaining journey if he managed to arrive just on time?
b) The time taken for his return journey is 2 hour and 10 minutes. Find the average speed for
i)The return journey. ii)the whole trip.
7/03/2011 12:02:00 PM
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7/04/2011 09:27:00 AM
Sorry! At 1:46, I meant to say 4 and 1/6h not 400 and 1/6h
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