Maths-
General
Easy
Question
An electric company charges Jerome $0.05 per kilowatt-hour (kWh) of energy he uses in his house. If Jerome was charged $36 by the electric company, how many kilowatt-hours of energy did Jerome use?
- 0.0014
- 1.8
- 180
- 720
The correct answer is: 720
Step by step explanation:
Given:
Charge for electricity per kilowatt-hour (kWh) = $0.05
Total charge for electricity = $36
Step 1.
Let the energy used be x kWh.
So, according to the given information,
The charge for x kWh will be 0.05 × x = $0.05x
Now, the total charge will be,
⇒ 0.05x
Step 2.
As, it is given that total charge is $36
∴ 0.05x = 36
⇒ 0.05x = 36
Divide both side by 0.05
⇒ x = 720
⇒ x = 720
Hence, the Jerome use 720 kilowatt-hours of energy.
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