Five 80-W and three 100W are run for 8 hours. If the cost of energy is N5.00 per unit, calculate the cost of running the lamp. [1 unit = 1 kWh]
a
N280.00
b
N28.00
c
N7.20
d
N1.44
Explanation
Correct Option
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Ifeoduyiga
1 year ago
in the question,it was stated that 1unit=1kwh.Therefore after multiplying 700×8=5600.you divide by 1000 to get 5.6. kwh.since the cost of energy is N5.00per unit,5.6×5=N28.00
