Bryan and Adam have 490 stickers.
After Bryan gives Adam 49 stickers,
Bryan has 220 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 + 269 |
1 u - 49 |
Change |
- 49 |
+ 49 |
After |
1 u + 220 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 220
= 2 u + 220
2 u + 220 = 490
2 u = 490 - 220
2 u = 270
1 u = 270 ÷ 2 = 135
Number of stickers that Bryan has at first
= 1 u + 269
= 135 + 269
= 404
(b)
Number of stickers that Adam has in the end
= 1 u
= 135
Answer(s): (a) 404; (b) 135