Bryan and Adam have 280 stickers.
After Bryan gives Adam 28 stickers,
Bryan has 240 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 + 268 |
1 u - 28 |
Change |
- 28 |
+ 28 |
After |
1 u + 240 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 240
= 2 u + 240
2 u + 240 = 280
2 u = 280 - 240
2 u = 40
1 u = 40 ÷ 2 = 20
Number of stickers that Bryan has at first
= 1 u + 268
= 20 + 268
= 288
(b)
Number of stickers that Adam has in the end
= 1 u
= 20
Answer(s): (a) 288; (b) 20