# Energy Consumption Equivalent to Barrels of Oil

If a person consumes 5.43 × 10^5 kcal in a day and one barrel of oil can produce 3.70 × 10^6 kcal, what is the equivalent of energy consumed per year by that person in terms of barrels of oil? Option 1: 0.15 barrels of oil Option 2: 0.50 barrels of oil Option 3: 1.25 barrels of oil Option 4: 15.00 barrels of oil

The answer is (3), that 538 barrels per year are consumed per year by that person in terms of barrels of oil.

## Calculation of Energy Consumption Equivalent to Barrels of Oil

**1. Conversion from Kilocalories to Calories:**5.43 × 10^5 kcal = 5.43 × 10^5 × 1000 cal = 5.43 × 10^8 cal

**2. Finding the Number of Barrels of Oil Equivalent to Daily Energy Consumption:**5.43 × 10^8 cal / 3.70 × 10^6 cal/barrel = 1.49 barrels/day

**3. Determining the Number of Barrels of Oil Equivalent to Yearly Energy Consumption:**1.49 barrels/day × 365 days/year = 538 barrels/year Therefore, the energy consumed per year by the person is equivalent to 538 barrels of oil, making Option (3) the correct answer choice.