Bryan and Adam have 270 stickers.
After Bryan gives Adam 27 stickers,
Bryan has 130 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 + 157 |
1 u - 27 |
Change |
- 27 |
+ 27 |
After |
1 u + 130 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 130
= 2 u + 130
2 u + 130 = 270
2 u = 270 - 130
2 u = 140
1 u = 140 ÷ 2 = 70
Number of stickers that Bryan has at first
= 1 u + 157
= 70 + 157
= 227
(b)
Number of stickers that Adam has in the end
= 1 u
= 70
Answer(s): (a) 227; (b) 70