The ratio of the number of green stickers to blue stickers is 5 : 3.
After Adam gives away 80 green stickers and 30 blue stickers,
there is an equal number of green stickers and blue stickers.
How many stickers does Adam have now?
|
Green |
Blue |
Before |
5 u |
3 u |
Change |
- 80 |
- 30 |
After |
5 u - 80 |
3 u - 30 |
The number of green stickers and blue stickers in the end is the same.
5 u - 80 = 3 u - 30
5 u - 3 u = 80 - 30
2 u = 50
1 u = 50 ÷ 2 = 25
Number of stickers that Adam has now
= 5 u - 80 + 3 u - 30
= 5 u + 3 u - 80 - 30
= 8 u - 110
= 8 x 25 - 110
= 200 - 110
= 90
Answer(s): 90