A. N7.20
B. N12.00
C. N30.00
D. N33.33
E. N72.00
Correct Answer:
Option A – N7.20
Explanation
E = 200 x 30 x 24 Wh = 144000; Wh = 144KWh
Cost 144 x 5k = N7.20
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![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]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "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]")