ratio of math

2007-12-09 11:40 pm
280 stamps are to be shared by Ada,Billy and Candy.Ada gets twice as much as Billy, and the number of stamps Candy has is 1/6 as that of Ada.
a. Find Ada's share :Billy's share:Candy's share.
b. How many stamps does each one get?
(請有計算過程和答案)
更新1:

part A我之前漏了Billy's share,所以問多次。

回答 (1)

2007-12-09 11:48 pm
✔ 最佳答案
280 stamps are to be shared by Ada,Billy and Candy.Ada gets twice as much as Billy, and the number of stamps Candy has is 1/6 as that of Ada.
a. Find Ada's share :Candy's share.
assume Ada has 2x stamps,
then Billy has (2x/2)=x stamps and,
Candy has (2x/6)=&nbs p;x/3 stamps
Ada's share :Candy's share
=2x:x/3
=6x:x [multipy both sides by 6]
=6:1

b. How many stamps does each one get?
total stamps are 280 stamps
Ada's share +Candy's share+Billy's share =280
2x+x+x/3=280
10x/3=280
x=84
Therefore,
Ada has2(84)=168stamps,
then Billy has (2*84/2)=84 stamps and,
Candy has (2*84/6)=&n bsp;84/3=28 stamps


2007-12-09 15:48:54 補充:
呢題你好似問過,如果我計錯你話俾我聽~~

2007-12-10 16:40:12 補充:
Ada's share :Billy's share:Candy's share=2x:x:x/3=6x:3x:x=6:3:1


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