A cell phone company has a basic monthly plan $40 plus $0.45 for any minutes used over 700. Before receiving his statement, john saw he was charged a total of$4

Question

A cell phone company has a basic monthly plan $40 plus $0.45 for any minutes used over 700. Before receiving his statement, john saw he was charged a total of$48.10. Wrote and solve an equation tp determine hoe many minutes he must have used during the month. Write an equation without decimals

Answer 1

Monthly bill  $40.00

Minutes over 700 @ $.45/min

Total bill $48.10

Amount for extra minutes = $48.10 - $40.00 = $8.10

 

$8.10/x min = $ .45/1 min

 

(.45) (x) = (8.10) (1)

 

x = 8.10/.45

x = 18.78          Round off to nearest minute = 19 min

 

x = (Bill amount - Monthly plan)/(45/100)  [round off to nearest whole number]