Adam and Bryan have 300 stickers.
After Adam gives Bryan 30 stickers,
Adam has 130 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 + 160 |
1 u - 30 |
Change |
- 30 |
+ 30 |
After |
1 u + 130 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 130
= 2 u + 130
2 u + 130 = 300
2 u = 300 - 130
2 u = 170
1 u = 170 ÷ 2 = 85
Number of stickers that Adam has at first
= 1 u + 160
= 85 + 160
= 245
(b)
Number of stickers that Bryan has in the end
= 1 u
= 85
Answer(s): (a) 245; (b) 85