Question

Kate replaces lights in her apartment with lightbulbs beginning this month. The packaging says the new bulbs will use 75% less electricity. If Kate's electric bill was $7.29 from bulb use alone, project how much Kate's electric bill will be
this month for bulb use.

Answer 1

If $7.29 is the bill with the old bulbs and the new ones use only 25% of the energy the old ones used, then she will also have to pay only 25% of the old bill, which is 0.25*7.29 = 1.8225, so about $1.82

Answer 2

Helllllo.

Answer 3

Thank you so much (: