Adam has 400 stickers and Bryan has 7 times as many stickers as Adam.
- How many stickers must Bryan give to Adam so that they have equal number of stickers?
- How many stickers will each boy have in the end?
| |
Adam |
Bryan |
Total |
| Before |
1 u |
7 u |
8 u |
| Change |
+ 3 u |
- 3 u |
|
| After |
4 u |
4 u |
8 u |
(a)
At first
Number of stickers that Adam has = 1 u = 400
Number of stickers that Bryan has = 7 u
Total number of stickers
= 1 u + 7 u
= 8 u
To have equal number of stickers,
the stickers must be equally divided into 2 groups.
In the end
Number of stickers that each boy has
= 8 u ÷ 2
= 4 u
Number of stickers that Bryan must give to Adam
= 7 u - 4 u
= 3 u
= 3 x 400
= 1200
(b)
Number of stickers that each boy will have in the end
= 4 u
= 4 x 400
= 1600
Answer(s): (a) 1200; (b) 1600
