Bryan and Adam have 450 stickers.
After Bryan gives Adam 45 stickers,
Bryan has 180 more stickers than Adam.
- How many stickers does Bryan have at first?
- How many stickers does Adam have in the end?
|
Bryan |
Adam |
Before |
1 u + 225 |
1 u - 45 |
Change |
- 45 |
+ 45 |
After |
1 u + 180 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 180
= 2 u + 180
2 u + 180 = 450
2 u = 450 - 180
2 u = 270
1 u = 270 ÷ 2 = 135
Number of stickers that Bryan has at first
= 1 u + 225
= 135 + 225
= 360
(b)
Number of stickers that Adam has in the end
= 1 u
= 135
Answer(s): (a) 360; (b) 135