The ratio of the number of green stickers to blue stickers is 8 : 5.
After Adam buys 40 green stickers and 70 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 |
5 u |
Change |
+ 40 |
+ 70 |
After |
8 u + 40 |
5 u + 70 |
The number of green stickers and blue stickers are equal in the end.
8 u + 40 = 5 u + 70
8 u - 5 u = 70 - 40
3 u = 30
1 u = 30 ÷ 3 = 10
Number of stickers that Adam has now
= 8 u + 40 + 5 u + 70
= 8 u + 5 u + 40 + 70
= 13 u + 110
= 13 x 10 + 110
= 130 + 110
= 240
Answer(s): 240