The ratio of the number of green stickers to blue stickers is 8 : 3.
After Adam buys 50 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 |
3 u |
| Change |
+ 50 |
+ 70 |
| After |
8 u + 50 |
3 u + 70 |
The number of green stickers and blue stickers are equal in the end.
8 u + 50 = 3 u + 70
8 u - 3 u = 70 - 50
5 u = 20
1 u = 20 ÷ 5 = 4
Number of stickers that Adam has now
= 8 u + 50 + 3 u + 70
= 8 u + 3 u + 50 + 70
= 11 u + 120
= 11 x 4 + 120
= 44 + 120
= 164
Answer(s): 164
