Adam and Bryan have 320 stickers.
After Adam gives Bryan 32 stickers,
Adam has 140 more stickers than Bryan.
- How many stickers does Adam have at first?
- How many stickers does Bryan have in the end?
|
Adam |
Bryan |
Before |
1 u + 172 |
1 u - 32 |
Change |
- 32 |
+ 32 |
After |
1 u + 140 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 140
= 2 u + 140
2 u + 140 = 320
2 u = 320 - 140
2 u = 180
1 u = 180 ÷ 2 = 90
Number of stickers that Adam has at first
= 1 u + 172
= 90 + 172
= 262
(b)
Number of stickers that Bryan has in the end
= 1 u
= 90
Answer(s): (a) 262; (b) 90