Bryan and Adam have 80 stickers.
After Bryan gives Adam 8 stickers,
Bryan has 10 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 + 18 |
1 u - 8 |
Change |
- 8 |
+ 8 |
After |
1 u + 10 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 10
= 2 u + 10
2 u + 10 = 80
2 u = 80 - 10
2 u = 70
1 u = 70 ÷ 2 = 35
Number of stickers that Bryan has at first
= 1 u + 18
= 35 + 18
= 53
(b)
Number of stickers that Adam has in the end
= 1 u
= 35
Answer(s): (a) 53; (b) 35