Bryan, Adam and Charlie have some stickers in the ratio of 15 : 2 : 4.
Bryan gives Adam and Charlie a total of 64 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 Bryan gives to Adam?
- What is the number of stickers that Bryan gives to Charlie?
|
Bryan |
Adam |
Charlie |
Before |
15 u |
2 u |
4 u |
Change |
- 8 u |
+ 5 u |
+ 3 u |
After |
7 u |
7 u |
7 u |
(a)
Total number of stickers
= 15 u + 2 u + 4 u
= 21 u
Number of stickers that each must have to be the same number
= 21 u ÷ 3
= 7 u
Number of stickers that Bryan gives away
= 15 u - 7 u
= 8 u
8 u = 64
1 u = 64 ÷ 8 = 8
Total number of stickers
= 21 u
= 21 x 8
= 168
(b)
Number of stickers that Bryan gives to Adam
= 7 u - 2 u
= 5 u
= 5 x 8
= 40
(c)
Number of stickers that Bryan gives to Charlie
= 7 u - 4 u
= 3 u
= 3 x 8
= 24
Answer(s): (a) 168; (b) 40; (c) 24