The ratio of the number of green stickers to blue stickers is 8 : 3.
After Adam buys 40 green stickers and 80 blue stickers,
there is an equal number of green stickers and blue stickers.
How many stickers does Adam have now?
|
Green |
Blue |
Before |
8 u |
3 u |
Change |
+ 40 |
+ 80 |
After |
8 u + 40 |
3 u + 80 |
The number of green stickers and blue stickers are equal in the end.
8 u + 40 = 3 u + 80
8 u - 3 u = 80 - 40
5 u = 40
1 u = 40 ÷ 5 = 8
Number of stickers that Adam has now
= 8 u + 40 + 3 u + 80
= 8 u + 3 u + 40 + 80
= 11 u + 120
= 11 x 8 + 120
= 88 + 120
= 208
Answer(s): 208