The ratio of the number of green stickers to blue stickers is 4 : 1.
After Adam buys 10 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 |
4 u |
1 u |
Change |
+ 10 |
+ 70 |
After |
4 u + 10 |
1 u + 70 |
The number of green stickers and blue stickers are equal in the end.
4 u + 10 = 1 u + 70
4 u - 1 u = 70 - 10
3 u = 60
1 u = 60 ÷ 3 = 20
Number of stickers that Adam has now
= 4 u + 10 + 1 u + 70
= 4 u + 1 u + 10 + 70
= 5 u + 80
= 5 x 20 + 80
= 100 + 80
= 180
Answer(s): 180