C Programming Problems( Rate charge) :  A call is charged 30 cents
per minute.
 The cost for line rental is RM60.00. The tax for the overall bill (including the line
rental) is 15%. 

Calculate the amount, that need to be paid by the user given the number of
minutes that the user uses his/her mobile phone.

How can I transform this formula into C code?

rate = (minute*0.30)+15/100 *60