SOLUTION: It takes a 60-watt bulb about 16.6 hours to use 1kWh of electricity. That is about 2.5 times as long as it takes a 150-watt bulb to use 1hWh. How long does it take a 150-watt bul

Question 23094: It takes a 60-watt bulb about 16.6 hours to use 1kWh of electricity. That is about 2.5 times as long as it takes a 150-watt bulb to use 1hWh. How long does it take a 150-watt bulb to use 1kWh?
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Higher wattage means that it takes LESS time to consume the electricity. If the 60 watt bulb takes 2.5 times as long to use electricity, then the 150 watt bulb will use the same electricity in 1/2.5 times as long. If it takes 16.6 hours for a 60 watt bulb to use 1kWh, then the 150 watt bulb will take hours.

Check:
60 watts * 16.4 hours = 996 watt-hours
150 watts * 6.64 hours = 996 watt-hours

No Extra Charge: Notice the answer in the check is 996 watt-hours, which is almost 1000 watt-hours. Now, what is the word for 1000? Isn't it "kilo"? In other words "kilo-watt-hours"!! Get it??? And why is it 996 watt-hours, which is APPROXIMATELY 1000 watt-hours, instead of EXACTLY 1000 watt-hours or one kilo-watt hour? Answer: Because in the problem it says that "It takes a 60-watt bulb ABOUT 16.6 hours to use 1kWh of electricity," which is rounded off! If you used (60 watts)*(16.6666666. . . hours), it would come out EXACTLY 1 kilowatt hour!!

R^2 at SCC

RELATED QUESTIONS
In a certain city, electricity costs $0.10 per kW�h. What is the annual cost for... (answered by ikleyn,MathTherapy)

If it takes 3 1/2 hours to ship a desk 100 miles, how long does it take to ship it 4 1/2... (answered by Alan3354)

A light bulb consumes 1800 watt-hours per day. How long does it take to consume 10350... (answered by Mathpassionate)

A light bulb consumes 1800 watt-hours per day. How long does it take to consume 5850... (answered by edjones)

John is trying to drain a swimming pool. He has two pumps, but he can only use one at a... (answered by Cromlix)

A light bulb company claims that the 40 watt light bulb it sells has an average life of... (answered by Theo)

a light bulb consumes 2400 watt-hours per day,how long does it take to consume 11200 watt (answered by Nate)

A light bulb consumes 960 watt-hour per day. How long does it take to consume 4480... (answered by stanbon)

The cost for burning a 75 watt bulb is given by the function c(h), where h represents the (answered by stanbon)