Bryan and Adam have 390 stickers.
After Bryan gives Adam 39 stickers,
Bryan has 230 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 + 269 |
1 u - 39 |
Change |
- 39 |
+ 39 |
After |
1 u + 230 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 230
= 2 u + 230
2 u + 230 = 390
2 u = 390 - 230
2 u = 160
1 u = 160 ÷ 2 = 80
Number of stickers that Bryan has at first
= 1 u + 269
= 80 + 269
= 349
(b)
Number of stickers that Adam has in the end
= 1 u
= 80
Answer(s): (a) 349; (b) 80