28-10-2018
Mathematics

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[PLEASE HELP!] A 60-watt LED lightbulb is used for 190 hours before it burns it out. What is the life of the lightbulb in kilowatt-hours?
- 1 kilowatt = 1000 watts
- example: 4 kilowatts * 4 hours = 16 kilowatts/hrs

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remotecontrolbrain remotecontrolbrain

28-10-2018

60 W = 0.06 kW

Lifetime = 0.06 kW * 190 h = 11.4 kWh

The lifetime of the bulb is 11.4 kWh, or kilowatt-hours

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