Question

How much does it cost to run a 1500-W hair dryer for 28 minutes each day for one month (30 days) at a cost of 5 cent per kWh?

Answer 1

104.925 cents

Step-by-step explanation:

It is given that the hair dryer is used for 28 minutes per day

So
`(28)/(60)=0.4666hour\ per\ day`

As it is given that one month = 30 days

So total time in which hair dryer is used = 30×0.4666=13.99

The rating of the hair dryer is =1500 W=1.5 KW

So the the total power used =1.500×13.99=20.985 kWh

It is given that it cost 5 cent per kWh so total cost =20.985×5=104.925 cents

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