Question

The climate in which Jonah lives is mild all year long except during the hotter summer months. For 3 months out of the year, Jonah needs to use 4 portable fans to cool his home. If the electricity to use one fan costs 1 cent per hour and each fan is on for about 96 hours per month, what is his total electricity cost for the fans during one year?
a.
$6.72
b.
$3.84
c.
$11.52
d.
$2.88

Answer 1

Each fan: 96 hours/month × 3 months = 288 hours.
Cost per fan: 288 hours × 1¢/hour = 288¢ = $2.88.
Four fans: 4 × $2.88 = $11.52.

Answer: c. $11.52