Adam and Bryan have 310 stickers.
After Adam gives Bryan 31 stickers,
Adam has 100 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 + 131 |
1 u - 31 |
Change |
- 31 |
+ 31 |
After |
1 u + 100 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 100
= 2 u + 100
2 u + 100 = 310
2 u = 310 - 100
2 u = 210
1 u = 210 ÷ 2 = 105
Number of stickers that Adam has at first
= 1 u + 131
= 105 + 131
= 236
(b)
Number of stickers that Bryan has in the end
= 1 u
= 105
Answer(s): (a) 236; (b) 105