In 2013, the United States used 97.5 quads of energy and had a population of 316.5 million people. That same year, Japan had a population of 127 million people and used 21 quads of energy. What was the average energy use (per million people) for Japan and the United States in 2013?

Question

Mollie Arroyo

Biology

8 January, 17:54

In 2013, the United States used 97.5 quads of energy and had a population of 316.5 million people. That same year, Japan had a population of 127 million people and used 21 quads of energy. What was the average energy use (per million people) for Japan and the United States in 2013?

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Elisa Branch · Answer 1

United States: 0.308 quads/million people. Japan: 0.165 quads/million people. This is a simple matter of division. Take the total energy used and divide among the number of people using it. So: United States: 97.5 / 316.5 = 0.308056872 quads per million people. Japan: 21 / 127 = 0.165354331 quads per million people. Rounding to 3 significant figures gives 0.308 quads/million for United States and 0.165 quads/million for Japan.