The number of blue and green stickers are equal.
If Adam gives away 70 blue stickers and 60 green stickers,
the ratio of blue stickers to green stickers becomes 3 : 8.
How many stickers are there at first?
|
Blue |
Green |
Before |
3 u + 70 |
8 u + 60 |
Change |
- 70 |
- 60 |
After |
3 u |
8 u |
The number of blue and green stickers is the same at first.
3 u + 70 = 8 u + 60
8 u - 3 u = 70 - 60
5 u = 10
1 u = 10 ÷ 5 = 2
Number of stickers that Adam has at first
= 3 u + 70 + 8 u + 60
= 3 u + 8 u + 70 + 60
= 11 u + 130
= 11 x 2 + 130
= 22 + 130
= 152
Answer(s): 152