The number of blue and green stickers are equal.
If Adam gives away 50 blue stickers and 10 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 + 50 |
3 u + 10 |
Change |
- 50 |
- 10 |
After |
1 u |
3 u |
The number of blue and green stickers is the same at first.
1 u + 50 = 3 u + 10
3 u - 1 u = 50 - 10
2 u = 40
1 u = 40 ÷ 2 = 20
Number of stickers that Adam has at first
= 1 u + 50 + 3 u + 10
= 1 u + 3 u + 50 + 10
= 4 u + 60
= 4 x 20 + 60
= 80 + 60
= 140
Answer(s): 140