Bryan and Adam have 500 stickers.
After Bryan gives Adam 50 stickers,
Bryan has 200 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 + 250 |
1 u - 50 |
Change |
- 50 |
+ 50 |
After |
1 u + 200 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 200
= 2 u + 200
2 u + 200 = 500
2 u = 500 - 200
2 u = 300
1 u = 300 ÷ 2 = 150
Number of stickers that Bryan has at first
= 1 u + 250
= 150 + 250
= 400
(b)
Number of stickers that Adam has in the end
= 1 u
= 150
Answer(s): (a) 400; (b) 150