Bryan and Adam have 280 stickers.
After Bryan gives Adam 28 stickers,
Bryan has 40 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 + 68 |
1 u - 28 |
Change |
- 28 |
+ 28 |
After |
1 u + 40 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 40
= 2 u + 40
2 u + 40 = 280
2 u = 280 - 40
2 u = 240
1 u = 240 ÷ 2 = 120
Number of stickers that Bryan has at first
= 1 u + 68
= 120 + 68
= 188
(b)
Number of stickers that Adam has in the end
= 1 u
= 120
Answer(s): (a) 188; (b) 120