SOLUTION: if 1/4 advert cost 5 dollars? how much would 5/8 cost?

Question 730584: if 1/4 advert cost 5 dollars? how much would 5/8 cost?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
0.25/5=0.625/x
0.25x=3.125
x=3.125/0.25
x=$12.50