Adam and Bryan have 180 stickers.
After Adam gives Bryan 18 stickers,
Adam has 40 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 + 58 |
1 u - 18 |
Change |
- 18 |
+ 18 |
After |
1 u + 40 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 40
= 2 u + 40
2 u + 40 = 180
2 u = 180 - 40
2 u = 140
1 u = 140 ÷ 2 = 70
Number of stickers that Adam has at first
= 1 u + 58
= 70 + 58
= 128
(b)
Number of stickers that Bryan has in the end
= 1 u
= 70
Answer(s): (a) 128; (b) 70