Question

A long distance phone company charges $1.01 for the first 25 minutes of a call, then $0.09 for each additional minute. A call cost $9.56 how long did it last?

Answer 1

You will have to form the equation:

1.01+.09x=9.56       Solve for x. Start buy subtracting 1.01 from both sides.
.09x=8.55               Divide both sides by .09
x=95                      The call was 95 additional minutes. So...
25+95=120           120 minutes in total. Check your answer by substituting x...

1.01+.09(95)=9.56
1.01+8.55=9.56
9.56=9.56

I hope this helps!