Adam and Bryan have 190 stickers.
After Adam gives Bryan 19 stickers,
Adam has 170 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 + 189 |
1 u - 19 |
Change |
- 19 |
+ 19 |
After |
1 u + 170 |
1 u |
(a)
Total number of stickers
= 1 u + 1 u + 170
= 2 u + 170
2 u + 170 = 190
2 u = 190 - 170
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stickers that Adam has at first
= 1 u + 189
= 10 + 189
= 199
(b)
Number of stickers that Bryan has in the end
= 1 u
= 10
Answer(s): (a) 199; (b) 10