The number of blue and green stickers are equal.
If Adam gives away 60 blue stickers and 40 green stickers,
the ratio of blue stickers to green stickers becomes 1 : 3.
How many stickers are there at first?
|
Blue |
Green |
Before |
1 u + 60 |
3 u + 40 |
Change |
- 60 |
- 40 |
After |
1 u |
3 u |
The number of blue and green stickers is the same at first.
1 u + 60 = 3 u + 40
3 u - 1 u = 60 - 40
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stickers that Adam has at first
= 1 u + 60 + 3 u + 40
= 1 u + 3 u + 60 + 40
= 4 u + 100
= 4 x 10 + 100
= 40 + 100
= 140
Answer(s): 140