Adam and Bryan have some stickers.
When Adam gives Bryan some stickers,
Bryan's stickers is doubled.
In the end, both have 60 stickers each.
- How many stickers does Bryan have at first?
- How many stickers does Adam have at first?
|
Adam |
Bryan |
Before |
1 u + 60 |
1 u |
Change |
- 1 u |
+ 1 u |
After |
60 |
2 u = 60 |
(a)
To double the number of stickers that Bryan has
= 2 x 1 u
= 2 u
2 u = 60
1 u = 60 ÷ 2 = 30
Number of stickers that Bryan has at first
= 1 u
= 30
(b)
Number of stickers that Adam has at first
= 1 u + 60
= 30 + 60
= 90
Answer(s): (a) 30; (b) 90