Answer
The total cost for a compact fluorescent bulb is $\$19.00$
The total cost for the incandescent bulbs is $\$65.00$
Work Step by Step
We can find the cost of electricity for a compact fluorescent bulb:
$C_e = (\$0.10/kWh)(0.015~kW)(10,000~h) = \$15.00$
Since the cost of this bulb is $\$4.00$, the total cost is $\$19.00$
We can find the cost of electricity for an incandescent bulb:
$C_e = (\$0.10/kWh)(0.060~kW)(10,000~h) = \$60.00$
Since the cost of this bulb is $\$0.50$ and we would need ten bulbs, the total cost is $\$65.00$
