Charlie, Adam and Bryan have some stickers in the ratio of 14 : 2 : 5.
Charlie gives Adam and Bryan a total of 63 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 |
14 u |
2 u |
5 u |
Change |
- 7 u |
+ 5 u |
+ 2 u |
After |
7 u |
7 u |
7 u |
(a)
Total number of stickers
= 14 u + 2 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
= 14 u - 7 u
= 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Total number of stickers
= 21 u
= 21 x 9
= 189
(b)
Number of stickers that Charlie gives to Adam
= 7 u - 2 u
= 5 u
= 5 x 9
= 45
(c)
Number of stickers that Charlie gives to Bryan
= 7 u - 5 u
= 2 u
= 2 x 9
= 18
Answer(s): (a) 189; (b) 45; (c) 18