Bryan and Adam have 500 stickers.
After Bryan gives Adam 50 stickers,
Bryan has 120 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 + 170 |
1 u - 50 |
Change |
- 50 |
+ 50 |
After |
1 u + 120 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 120
= 2 u + 120
2 u + 120 = 500
2 u = 500 - 120
2 u = 380
1 u = 380 ÷ 2 = 190
Number of stickers that Bryan has at first
= 1 u + 170
= 190 + 170
= 360
(b)
Number of stickers that Adam has in the end
= 1 u
= 190
Answer(s): (a) 360; (b) 190