Question

A microwave oven has a power requirement of 1250 W. A frozen dinner requires 6.5 min to heat on full power. If the cost of electricity is 12 cents per kWh, how much does it cost to heat the dinner?

Answer 1

cost=.12$/kwh*6.5min*1hr/60min*1.25kw= .12*6.5*1.25/60