Adam has 300 stickers and Charlie has 9 times as many stickers as Adam.
- How many stickers must Charlie give to Adam so that they have equal number of stickers?
- How many stickers will each boy have in the end?
| |
Adam |
Charlie |
Total |
| Before |
1 u |
9 u |
10 u |
| Change |
+ 4 u |
- 4 u |
|
| After |
5 u |
5 u |
10 u |
(a)
At first
Number of stickers that Adam has = 1 u = 300
Number of stickers that Charlie has = 9 u
Total number of stickers
= 1 u + 9 u
= 10 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
= 10 u ÷ 2
= 5 u
Number of stickers that Charlie must give to Adam
= 9 u - 5 u
= 4 u
= 4 x 300
= 1200
(b)
Number of stickers that each boy will have in the end
= 5 u
= 5 x 300
= 1500
Answer(s): (a) 1200; (b) 1500
