The number of blue and green stickers are equal.
If Adam gives away 60 blue stickers and 30 green stickers,
the ratio of blue stickers to green stickers becomes 2 : 5.
How many stickers are there at first?
|
Blue |
Green |
Before |
2 u + 60 |
5 u + 30 |
Change |
- 60 |
- 30 |
After |
2 u |
5 u |
The number of blue and green stickers is the same at first.
2 u + 60 = 5 u + 30
5 u - 2 u = 60 - 30
3 u = 30
1 u = 30 ÷ 3 = 10
Number of stickers that Adam has at first
= 2 u + 60 + 5 u + 30
= 2 u + 5 u + 60 + 30
= 7 u + 90
= 7 x 10 + 90
= 70 + 90
= 160
Answer(s): 160