Charlie, Bryan and Adam have some stickers in the ratio of 14 : 1 : 6.
Charlie gives Bryan and Adam a total of 70 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 Bryan?
- What is the number of stickers that Charlie gives to Adam?
|
Charlie |
Bryan |
Adam |
Before |
14 u |
1 u |
6 u |
Change |
- 7 u |
+ 6 u |
+ 1 u |
After |
7 u |
7 u |
7 u |
(a)
Total number of stickers
= 14 u + 1 u + 6 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 = 70
1 u = 70 ÷ 7 = 10
Total number of stickers
= 21 u
= 21 x 10
= 210
(b)
Number of stickers that Charlie gives to Bryan
= 7 u - 1 u
= 6 u
= 6 x 10
= 60
(c)
Number of stickers that Charlie gives to Adam
= 7 u - 6 u
= 1 u
= 1 x 10
= 10
Answer(s): (a) 210; (b) 60; (c) 10