Question

A laptop computer consumes about 40 watts of electricity per hour when operating. At $0.20 per kilowatt-hour, how much does a laptop cost to operate for 10 hours?

Answer 1

Answer: 80

Step-by-step explanation: 40 watts at .2$ per hour would be = to 8. Then for 10 hours you would multiply the 8 by 10.

Answer 2

The operating cost of the laptop at 10 hours is $80

The parameters given in the question are;

laptop consumption of the laptop= 40 watts

amount per kilowatt per hour= $0.20

The first step is to calculate the operating cost per hour

= 0.2×40

=  8

Therefore the operating cost of the laptop for 10hours can be calculated as follows

= 8×10

= $80

Hence the operating cost of the laptop for 10 hours is $80

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