Charlie, Adam and Bryan have some stickers in the ratio of 15 : 1 : 5.
Charlie gives Adam and Bryan a total of 96 stickers.
Now they have same number of stickers.
- What is the total number of stickers that they have?
- What is the number of stickers that Charlie gives to Adam?
- What is the number of stickers that Charlie gives to Bryan?
|
Charlie |
Adam |
Bryan |
Before |
15 u |
1 u |
5 u |
Change |
- 8 u |
+ 6 u |
+ 2 u |
After |
7 u |
7 u |
7 u |
(a)
Total number of stickers
= 15 u + 1 u + 5 u
= 21 u
Number of stickers that each must have to be the same number
= 21 u ÷ 3
= 7 u
Number of stickers that Charlie gives away
= 15 u - 7 u
= 8 u
8 u = 96
1 u = 96 ÷ 8 = 12
Total number of stickers
= 21 u
= 21 x 12
= 252
(b)
Number of stickers that Charlie gives to Adam
= 7 u - 1 u
= 6 u
= 6 x 12
= 72
(c)
Number of stickers that Charlie gives to Bryan
= 7 u - 5 u
= 2 u
= 2 x 12
= 24
Answer(s): (a) 252; (b) 72; (c) 24