Charlie, Adam and Bryan have some stickers in the ratio of 11 : 6 : 4.
Charlie gives Adam and Bryan a total of 76 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 |
11 u |
6 u |
4 u |
Change |
- 4 u |
+ 1 u |
+ 3 u |
After |
7 u |
7 u |
7 u |
(a)
Total number of stickers
= 11 u + 6 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 Charlie gives away
= 11 u - 7 u
= 4 u
4 u = 76
1 u = 76 ÷ 4 = 19
Total number of stickers
= 21 u
= 21 x 19
= 399
(b)
Number of stickers that Charlie gives to Adam
= 7 u - 6 u
= 1 u
= 1 x 19
= 19
(c)
Number of stickers that Charlie gives to Bryan
= 7 u - 4 u
= 3 u
= 3 x 19
= 57
Answer(s): (a) 399; (b) 19; (c) 57