Adam, Charlie and Bryan have some stickers in the ratio of 11 : 2 : 5.
Adam gives Charlie and Bryan a total of 35 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 Adam gives to Charlie?
- What is the number of stickers that Adam gives to Bryan?
|
Adam |
Charlie |
Bryan |
Before |
11 u |
2 u |
5 u |
Change |
- 5 u |
+ 4 u |
+ 1 u |
After |
6 u |
6 u |
6 u |
(a)
Total number of stickers
= 11 u + 2 u + 5 u
= 18 u
Number of stickers that each must have to be the same number
= 18 u ÷ 3
= 6 u
Number of stickers that Adam gives away
= 11 u - 6 u
= 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Total number of stickers
= 18 u
= 18 x 7
= 126
(b)
Number of stickers that Adam gives to Charlie
= 6 u - 2 u
= 4 u
= 4 x 7
= 28
(c)
Number of stickers that Adam gives to Bryan
= 6 u - 5 u
= 1 u
= 1 x 7
= 7
Answer(s): (a) 126; (b) 28; (c) 7