Question

Suppose you have a 2000 Watt water heater that is on for a total of 150...

Suppose you have a 2000 Watt water heater that is on for a total of 150 hours a month. How much will this cost you at a rate of 10 cents per kW*hr?

  • 45$

  • 40$

  • $50

  • $15

  • $75

  • $30

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Answer #1

Given data:

Power used by water heater = 2000 W= 2 kW

Total time for which water heater is used = 150 hours

Therefore number of units ( kW hr) used by the water heater will be:

As cost is 0.10 $ (10 cents) per kW hr therefore total cost for the month will be:

Therefore last option is the correct answer

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