The ratio of the number of green stickers to blue stickers is 5 : 3.
After Adam buys 40 green stickers and 60 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 |
+ 40 |
+ 60 |
After |
5 u + 40 |
3 u + 60 |
The number of green stickers and blue stickers are equal in the end.
5 u + 40 = 3 u + 60
5 u - 3 u = 60 - 40
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stickers that Adam has now
= 5 u + 40 + 3 u + 60
= 5 u + 3 u + 40 + 60
= 8 u + 100
= 8 x 10 + 100
= 80 + 100
= 180
Answer(s): 180