The number of green and blue stickers are equal.
If Adam gives away 50 green stickers and 40 blue stickers,
the ratio of green stickers to blue stickers becomes 3 : 5.
How many stickers are there at first?
|
Green |
Blue |
Before |
3 u + 50 |
5 u + 40 |
Change |
- 50 |
- 40 |
After |
3 u |
5 u |
The number of green and blue stickers is the same at first.
3 u + 50 = 5 u + 40
5 u - 3 u = 50 - 40
2 u = 10
1 u = 10 ÷ 2 = 5
Number of stickers that Adam has at first
= 3 u + 50 + 5 u + 40
= 3 u + 5 u + 50 + 40
= 8 u + 90
= 8 x 5 + 90
= 40 + 90
= 130
Answer(s): 130