Question

Chloe lives in an area where she runs the air conditioner during the 4 hottest months of the year. The air conditioner runs for 7 hours per day at a cost of 21 cents per hour. How much does she spend per year on utility bills for the air conditioner?(Assume there are 30 days in each month)
a.
$705.60
b.
$588.00
c.
$216.09
d.
$176.40

Answer 1

4 months × 30 days = 120 days.
120 days × 7 hours/day = 840 hours.
840 hours × $0.21/hour = $176.40.

Answer: d. $176.40