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A type of electric car can travel 3 miles on 1 kilowatt hour of electricity. How many kilowatt hours of electricity would it take to drive electric car to ​'s house and​ back? Lives miles from .

User Lex B
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6 votes

Answer:

Question is incomplete so I'll use a reference.

Assume the person whose house the car went to is 21 miles away.

The car would have had to go back and forth so the total distance spent would be:

= 21 + 21

= 42 miles

The car uses 1 kilowatt hour to go 3 miles. Now it has to go 42 miles.

The number of kilowatt hours it will need are:

= Distance / distance per kilowatt hour

= 42 / 3

= 14 kilowatt hours

User Twigmac
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