The ratio of the number of blue stickers to green stickers is 8 : 5.
After Adam gives away 80 blue stickers and 20 green stickers,
there is an equal number of blue stickers and green stickers.
How many stickers does Adam have now?
|
Blue |
Green |
Before |
8 u |
5 u |
Change |
- 80 |
- 20 |
After |
8 u - 80 |
5 u - 20 |
The number of blue stickers and green stickers in the end is the same.
8 u - 80 = 5 u - 20
8 u - 5 u = 80 - 20
3 u = 60
1 u = 60 ÷ 3 = 20
Number of stickers that Adam has now
= 8 u - 80 + 5 u - 20
= 8 u + 5 u - 80 - 20
= 13 u - 100
= 13 x 20 - 100
= 260 - 100
= 160
Answer(s): 160