Adam and Bryan have 130 stickers.
After Adam gives Bryan 13 stickers,
Adam has 70 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 + 83 |
1 u - 13 |
Change |
- 13 |
+ 13 |
After |
1 u + 70 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 70
= 2 u + 70
2 u + 70 = 130
2 u = 130 - 70
2 u = 60
1 u = 60 ÷ 2 = 30
Number of stickers that Adam has at first
= 1 u + 83
= 30 + 83
= 113
(b)
Number of stickers that Bryan has in the end
= 1 u
= 30
Answer(s): (a) 113; (b) 30