SOLUTION: the difference between a number divided by 3 and 4 is 20. and, Aubrey has $120 to spend on a tennis racket and lessons. The racket costs $45 and the lessons cost $15/hr. How m

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: the difference between a number divided by 3 and 4 is 20. and, Aubrey has $120 to spend on a tennis racket and lessons. The racket costs $45 and the lessons cost $15/hr. How m      Log On

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Question 807034: the difference between a number divided by 3 and 4 is 20.
and, Aubrey has $120 to spend on a tennis racket and lessons. The racket costs $45 and the lessons cost $15/hr. How many hours of lessons can she afford?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
the difference between a number divided by 3 and 4 is 20.
n%2F3 - n%2F4 = 20
multiply by 12
4n - 3n = 12(20)
n = 240 is the number
and,
Aubrey has $120 to spend on a tennis racket and lessons.
The racket costs $45 and the lessons cost $15/hr.
How many hours of lessons can she afford?
hrs = %28120-45%29%2F15
hrs = 5 hrs