Question

in a recent year, wind machines in a country generated 181.1 billion kwh of electricity, enough to serve more than 16 million households. the nations total electricity production that year was 4,098 billion kwh. what percent of the total energy production was generated by wind machines? round to the nearest tenth of a percent.

Explanation:

Step1: Recall percentage formula

Percent = $\frac{\text{Part}}{\text{Whole}}\times100\%$

Step2: Identify part and whole

The part is the electricity generated by wind - machines, which is 181.1 billion kWh. The whole is the nation's total electricity production, which is 4098 billion kWh.

Step3: Calculate the percentage

Percent = $\frac{181.1}{4098}\times100\%$
Percent = $0.0442\times100\% = 4.42\%$

Step4: Round to the nearest tenth

Rounding 4.42% to the nearest tenth gives 4.4%

Answer:

4.4%