PH-2040
Cost of electricity
Physics · Secondary 4 · Hard · Cost of electricity
A household uses a 150 W fan and a 800 W microwave oven. The fan runs for 5.0 h each day, while the microwave runs for 0.75 h each day. The cost of electricity is 25 cents per kWh. What is the total cost of operating both appliances for one day?
- \$0.19
- \$0.24
- \$0.34
- \$0.40
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