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How much (in decimal dollars) does it cost to run a 1,500 W hair dryer for 43 minutes each day for a month (30 days) at a cost of 19¢ per kWh?___________$

User Shakima
by
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1 Answer

3 votes

Answer:

$612.75

Step-by-step explanation:

First, convert 43 minutes into hours


43\text{ min}*\frac{1\text{ hour}}{60\text{ min}}=0.716\text{ hours}

Then, the total number of hours in the month is


0.716\text{ hours }*30\text{ days = 21.5 hours}

Then, 1,500 W is equivalent to 1.5 kW, so the total kWh is equal to


1.5kW*21.5\text{ hours = 32.25 kWh}

Now, we can calculate the cost as follows


33.25\text{ kWh}*\frac{19\text{ \$}}{1\text{ kWh}}=612.75\text{ }

Therefore, the answer is $612.75

User Yannic
by
6.8k points