SOLUTION: Nathan subscribes to an online computer service that charges Php 100 for 25 hours online and Php 6 for each hour online in excess of 25 hours. Last month, his bill was Php 622. Ho

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Nathan subscribes to an online computer service that charges Php 100 for 25 hours online and Php 6 for each hour online in excess of 25 hours. Last month, his bill was Php 622. Ho      Log On


   

Question 1180452: Nathan subscribes to an online computer service that charges Php 100 for 25 hours online and Php 6 for each hour
online in excess of 25 hours. Last month, his bill was Php 622. How many extra hours was he charged for? (using 1 variable)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
C = 100+6x
where c is the total charge for x extra hours
last month she paid 622Php
622 = 100 +6x
522=6x
x=522/6
x=87 hours extra