Bryan and Adam have 290 stickers.
After Bryan gives Adam 29 stickers,
Bryan has 80 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 + 109 |
1 u - 29 |
Change |
- 29 |
+ 29 |
After |
1 u + 80 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 80
= 2 u + 80
2 u + 80 = 290
2 u = 290 - 80
2 u = 210
1 u = 210 ÷ 2 = 105
Number of stickers that Bryan has at first
= 1 u + 109
= 105 + 109
= 214
(b)
Number of stickers that Adam has in the end
= 1 u
= 105
Answer(s): (a) 214; (b) 105