A man has 60w bulbs and a 240w water heater in his apartment. If the bulbs and the water heater are switched on for four hours daily and the cost of electricity is N1.20 per KWh calculare his bill in 30 days

Explanation:

Given

Power consumption of bulb and water are and

If the Devices are on for four hours

Total power of devices

Energy consumed for 4 hours is

For 30 days it is

Cost for 30 days

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