A microwave oven of 3 kW rating is operated for 30 minutes,

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A microwave oven of 3 kW rating is operated for 30 minutes, a hot water geyser of 1 kW rating is operated for 15 minutes, and 5 fluorescent lamps of 60 W are operated for 6 hours. The total power consumed (in kWh) will be

1. 1.80
2. 3.55
3. 18.01
4. 35.50

Correct Option: B

Total power = 3 × 0.5 + 1 × .25 + 0.3 × 6
Total power = 3.55 kW