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.

5 comments:

  1. (1)$129-$109 =$20
    20/129 x 100 = 15.5% (3SF)

    (2)$129-$85=$44
    44/129 x 100 =34.1% (3SF)

    From: Nina and Ruoyu

    ReplyDelete
  2. (1) 120-109=20
    $(20/129) * 100% = 15.5% (3sf)
    He saved 15.5% (3 sf) compared to his friend

    (2) 129-85=44
    $(44/129) * 100% = 34.1% (3sf)
    He saved 34.1% (3 sf) compared to buying at the PC show

    By: Jia Qi, Gladys, Jonathan

    ReplyDelete
  3. From: Jiajun and Wei Siew
    1) 129-109
    20/109 x 100=18.3%(3 SF)
    He saved 18.3%

    2) 129-85=44
    44/109 x 100= 40.4%(3 SF)
    He saved 40.4%

    ReplyDelete
  4. All the groups have submitted:
    1. Jiajun and Wei Siew
    2. Jia Qi, Gladys, Jonathan
    3. Nina and Ruoyu

    ReplyDelete
  5. (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)

    ReplyDelete