Charlie has 500 stickers and Bryan has 9 times as many stickers as Charlie.
- How many stickers must Bryan give to Charlie so that they have equal number of stickers?
- How many stickers will each boy have in the end?
|
Charlie |
Bryan |
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 Charlie has = 1 u = 500
Number of stickers that Bryan 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 Bryan must give to Charlie
= 9 u - 5 u
= 4 u
= 4 x 500
= 2000
(b)
Number of stickers that each boy will have in the end
= 5 u
= 5 x 500
= 2500
Answer(s): (a) 2000; (b) 2500