Bryan, Charlie and Adam have some stickers in the ratio of 15 : 2 : 1.
Bryan gives Charlie and Adam a total of 117 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 Charlie?
- What is the number of stickers that Bryan gives to Adam?
|
Bryan |
Charlie |
Adam |
Before |
15 u |
2 u |
1 u |
Change |
- 9 u |
+ 4 u |
+ 5 u |
After |
6 u |
6 u |
6 u |
(a)
Total number of stickers
= 15 u + 2 u + 1 u
= 18 u
Number of stickers that each must have to be the same number
= 18 u ÷ 3
= 6 u
Number of stickers that Bryan gives away
= 15 u - 6 u
= 9 u
9 u = 117
1 u = 117 ÷ 9 = 13
Total number of stickers
= 18 u
= 18 x 13
= 234
(b)
Number of stickers that Bryan gives to Charlie
= 6 u - 2 u
= 4 u
= 4 x 13
= 52
(c)
Number of stickers that Bryan gives to Adam
= 6 u - 1 u
= 5 u
= 5 x 13
= 65
Answer(s): (a) 234; (b) 52; (c) 65