SOLUTION: The basic fine for speeding is $15, to which is added $3 for each mile per hour (mph) over the speed limit of 55 mph. Sally had to pay a $72 fine for speeding. For what speed, in m

Algebra ->  Equations -> SOLUTION: The basic fine for speeding is $15, to which is added $3 for each mile per hour (mph) over the speed limit of 55 mph. Sally had to pay a $72 fine for speeding. For what speed, in m      Log On


   

Question 1073492: The basic fine for speeding is $15, to which is added $3 for each mile per hour (mph) over the speed limit of 55 mph. Sally had to pay a $72 fine for speeding. For what speed, in miles per hour, was Silly charged?
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
.
The speed OVER the limit was %2872-15%29%2F3 = 24 - 5 = 19 miles per hour.

Silly's speed was 55 + 19 = 74 mph.