Adam and Bryan have 220 stickers.
After Adam gives Bryan 22 stickers,
Adam has 50 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 + 72 |
1 u - 22 |
Change |
- 22 |
+ 22 |
After |
1 u + 50 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 50
= 2 u + 50
2 u + 50 = 220
2 u = 220 - 50
2 u = 170
1 u = 170 ÷ 2 = 85
Number of stickers that Adam has at first
= 1 u + 72
= 85 + 72
= 157
(b)
Number of stickers that Bryan has in the end
= 1 u
= 85
Answer(s): (a) 157; (b) 85