Adam and Bryan have 450 stickers.
After Adam gives Bryan 45 stickers,
Adam has 270 more stickers than Bryan.
- How many stickers does Adam have at first?
- How many stickers does Bryan have in the end?
|
Adam |
Bryan |
Before |
1 u + 315 |
1 u - 45 |
Change |
- 45 |
+ 45 |
After |
1 u + 270 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 270
= 2 u + 270
2 u + 270 = 450
2 u = 450 - 270
2 u = 180
1 u = 180 ÷ 2 = 90
Number of stickers that Adam has at first
= 1 u + 315
= 90 + 315
= 405
(b)
Number of stickers that Bryan has in the end
= 1 u
= 90
Answer(s): (a) 405; (b) 90