The number of blue and green stickers are equal.
If Adam gives away 70 blue stickers and 10 green stickers,
the ratio of blue stickers to green stickers becomes 5 : 9.
How many stickers are there at first?
|
Blue |
Green |
Before |
5 u + 70 |
9 u + 10 |
Change |
- 70 |
- 10 |
After |
5 u |
9 u |
The number of blue and green stickers is the same at first.
5 u + 70 = 9 u + 10
9 u - 5 u = 70 - 10
4 u = 60
1 u = 60 ÷ 4 = 15
Number of stickers that Adam has at first
= 5 u + 70 + 9 u + 10
= 5 u + 9 u + 70 + 10
= 14 u + 80
= 14 x 15 + 80
= 210 + 80
= 290
Answer(s): 290