Bryan and Adam have 420 stickers.
After Bryan gives Adam 42 stickers,
Bryan has 150 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 + 192 |
1 u - 42 |
Change |
- 42 |
+ 42 |
After |
1 u + 150 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 150
= 2 u + 150
2 u + 150 = 420
2 u = 420 - 150
2 u = 270
1 u = 270 ÷ 2 = 135
Number of stickers that Bryan has at first
= 1 u + 192
= 135 + 192
= 327
(b)
Number of stickers that Adam has in the end
= 1 u
= 135
Answer(s): (a) 327; (b) 135