Adam and Bryan have 130 stickers.
After Adam gives Bryan 13 stickers,
Adam has 10 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 + 23 |
1 u - 13 |
Change |
- 13 |
+ 13 |
After |
1 u + 10 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 10
= 2 u + 10
2 u + 10 = 130
2 u = 130 - 10
2 u = 120
1 u = 120 ÷ 2 = 60
Number of stickers that Adam has at first
= 1 u + 23
= 60 + 23
= 83
(b)
Number of stickers that Bryan has in the end
= 1 u
= 60
Answer(s): (a) 83; (b) 60