Bryan and Adam have 230 stickers.
After Bryan gives Adam 23 stickers,
Bryan has 170 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 + 193 |
1 u - 23 |
Change |
- 23 |
+ 23 |
After |
1 u + 170 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 170
= 2 u + 170
2 u + 170 = 230
2 u = 230 - 170
2 u = 60
1 u = 60 ÷ 2 = 30
Number of stickers that Bryan has at first
= 1 u + 193
= 30 + 193
= 223
(b)
Number of stickers that Adam has in the end
= 1 u
= 30
Answer(s): (a) 223; (b) 30