Adam and Bryan have 490 stickers.
After Adam gives Bryan 49 stickers,
Adam has 370 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 + 419 |
1 u - 49 |
Change |
- 49 |
+ 49 |
After |
1 u + 370 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 370
= 2 u + 370
2 u + 370 = 490
2 u = 490 - 370
2 u = 120
1 u = 120 ÷ 2 = 60
Number of stickers that Adam has at first
= 1 u + 419
= 60 + 419
= 479
(b)
Number of stickers that Bryan has in the end
= 1 u
= 60
Answer(s): (a) 479; (b) 60