Adam and Bryan have 150 stickers.
After Adam gives Bryan 15 stickers,
Adam has 30 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 + 45 |
1 u - 15 |
Change |
- 15 |
+ 15 |
After |
1 u + 30 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 30
= 2 u + 30
2 u + 30 = 150
2 u = 150 - 30
2 u = 120
1 u = 120 ÷ 2 = 60
Number of stickers that Adam has at first
= 1 u + 45
= 60 + 45
= 105
(b)
Number of stickers that Bryan has in the end
= 1 u
= 60
Answer(s): (a) 105; (b) 60