Adam and Bryan have 300 stickers.
After Adam gives Bryan 30 stickers,
Adam has 170 more stickers than Bryan.
- How many stickers does Adam have at first?
- How many stickers does Bryan have in the end?
|
Adam |
Bryan |
Before |
1 u + 200 |
1 u - 30 |
Change |
- 30 |
+ 30 |
After |
1 u + 170 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 170
= 2 u + 170
2 u + 170 = 300
2 u = 300 - 170
2 u = 130
1 u = 130 ÷ 2 = 65
Number of stickers that Adam has at first
= 1 u + 200
= 65 + 200
= 265
(b)
Number of stickers that Bryan has in the end
= 1 u
= 65
Answer(s): (a) 265; (b) 65