Bryan and Adam have some stickers.
When Bryan gives Adam some stickers,
Bryan's stickers is doubled.
In the end, both have 170 stickers each.
- How many stickers does Adam have at first?
- How many stickers does Bryan have at first?
|
Bryan |
Adam |
Before |
1 u + 170 |
1 u |
Change |
- 1 u |
+ 1 u |
After |
170 |
2 u = 170 |
(a)
To double the number of stickers that Adam has
= 2 x 1 u
= 2 u
2 u = 170
1 u = 170 ÷ 2 = 85
Number of stickers that Adam has at first
= 1 u
= 85
(b)
Number of stickers that Bryan has at first
= 1 u + 170
= 85 + 170
= 255
Answer(s): (a) 85; (b) 255