### Chap 10 Percentages: Which is a Better Deal? (III)

Mr Yeo wanted to buy a portable hard-drive, Iomega Prestige (1TB) to store the multimedia productions by the students.

While he was surfing the Internet to look for a good deal, Mr Yeo chanced upon the eBrochure of the PC Show 2011 in June.

He exclaimed, "Oops! I missed a good deal!".

Next, Mr Yeo went to the Challenger Computer Store, site and found the same product but offering at a lower price!

(1) Mr Yeo is not a member of the Challenger Store. Find the percentage he saved, compared to another friend who bought the same device at the PC Show.

(2) If Mr Yeo decides become a member (at the point of payment) to enjoy the member's price. Find the percentage he saved, compared to buying at the PC Show.

1. 1) He save 15.5 % (3s.f)

2) He save 34.1% (3s.f)

2. 1) He saved 18.3% (3 SF)
2) He would have saved 40.4% (3 SF)

Member Names: Kaung Myat Thu (Max), Kashyap Shroff Rajendra Prasad, Matthew Goh

3. 1. 129-109=20
(20/129)*100%=15.5%(3sf)

2. 129-85=44
(44/129)*100%=34.1%(3sf)

4. a) He save 15.5 %

b) He save 34.1%

5. OK... All the groups have answered, but most of all did not put up down partners' name:
(1) Joshua & Eugene
(2) Siddharth & Leighton
(3) Akhila & Mervin

6. (a) To answer to the first question, we would find the difference = \$129 - \$109
i.e. PC Show Price minus Non-member's price
Difference = \$20
In this case, we use the PC Show Price as the original price (that Mr Yeo saved from)
Hence, percentage saved = \$20/\$129 X 100%
= 15.5% (3SF)

(b) Difference = \$129 - \$85
= \$44
Percentage saved (if Mr Yeo is a member)
= \$44/\$129 X 100%
= 34.1% (3SF)

Max, Matthew & Kashyap - pls note