A household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it in 20 days?
-
A.
N4.80 -
B.
N48.00 -
C.
N480.00 -
D.
N4800.00
Correct Answer: Option A
Explanation
Energy(kWhr) = 200 x 10-3 x 20 x 24
= 96kwhr
1 kwhr cost 5 kobo ; 96 kwhr will cost
5 x 96 = 480 kobo
= N4.80