1. David saves 12 dollers by buying a basketball at a 15% discount.What is the marked price of the basketball?
2.Peter buys a dozen of pens at 45% off and saves 27 dollers.
(a)Find the marked price of a dozen of pens.
(b0Find the selling price of each pen.
S.1 Maths Question*s
2010-01-23 3:40 am
回答 (1)
2010-01-23 4:27 am
✔ 最佳答案
1.Let y be the marked price of the basketball,
15%y=$12
y=$80
∴The marked price of the basketball is $80.
2a.
Let a be the marked price of a dozen of pens,
45%a=$27
a=$60
∴The marked price of a dozen of pens is$60.
b.
The selling price of each pen
=($60/12)(1-45%)
=$2.75
收錄日期: 2021-04-18 17:49:32
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