Charlie, Bryan and Adam have some stickers in the ratio of 15 : 5 : 4.
Charlie gives Bryan and Adam a total of 112 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 Bryan?
- What is the number of stickers that Charlie gives to Adam?
|
Charlie |
Bryan |
Adam |
Before |
15 u |
5 u |
4 u |
Change |
- 7 u |
+ 3 u |
+ 4 u |
After |
8 u |
8 u |
8 u |
(a)
Total number of stickers
= 15 u + 5 u + 4 u
= 24 u
Number of stickers that each must have to be the same number
= 24 u ÷ 3
= 8 u
Number of stickers that Charlie gives away
= 15 u - 8 u
= 7 u
7 u = 112
1 u = 112 ÷ 7 = 16
Total number of stickers
= 24 u
= 24 x 16
= 384
(b)
Number of stickers that Charlie gives to Bryan
= 8 u - 5 u
= 3 u
= 3 x 16
= 48
(c)
Number of stickers that Charlie gives to Adam
= 8 u - 4 u
= 4 u
= 4 x 16
= 64
Answer(s): (a) 384; (b) 48; (c) 64