Bryan and Adam have 310 stickers.
After Bryan gives Adam 31 stickers,
Bryan has 160 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 + 191 |
1 u - 31 |
Change |
- 31 |
+ 31 |
After |
1 u + 160 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 160
= 2 u + 160
2 u + 160 = 310
2 u = 310 - 160
2 u = 150
1 u = 150 ÷ 2 = 75
Number of stickers that Bryan has at first
= 1 u + 191
= 75 + 191
= 266
(b)
Number of stickers that Adam has in the end
= 1 u
= 75
Answer(s): (a) 266; (b) 75