Adam and Bryan have 500 stickers.
After Adam gives Bryan 50 stickers,
Adam has 450 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 + 500 |
1 u - 50 |
Change |
- 50 |
+ 50 |
After |
1 u + 450 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 450
= 2 u + 450
2 u + 450 = 500
2 u = 500 - 450
2 u = 50
1 u = 50 ÷ 2 = 25
Number of stickers that Adam has at first
= 1 u + 500
= 25 + 500
= 525
(b)
Number of stickers that Bryan has in the end
= 1 u
= 25
Answer(s): (a) 525; (b) 25