To determine how many pounds of CO2 are produced when a truck that gets 6.2 miles per gallon (mpg) travels 2,263 miles across the country, we can follow these steps:
1. Calculate the amount of fuel (in gallons) used:
- The truck travels 2,263 miles.
- The fuel efficiency of the truck is 6.2 miles per gallon.
- To find the number of gallons used, we divide the total miles traveled by the miles per gallon:
[tex]\[
\text{Gallons used} = \frac{\text{Miles traveled}}{\text{Miles per gallon}} = \frac{2263}{6.2} = 365 \text{ gallons}
\][/tex]
2. Calculate the total CO2 produced:
- Each gallon of gasoline produces 19.6 pounds of CO2.
- To find the total CO2 produced, we multiply the gallons used by the pounds of CO2 produced per gallon:
[tex]\[
\text{Total CO2 produced} = \text{Gallons used} \times \text{CO2 per gallon} = 365 \times 19.6 = 7154 \text{ pounds}
\][/tex]
3. Round the result to the nearest pound:
- The calculated CO2 produced is 7,154 pounds.
Therefore, when a truck that gets 6.2 mpg travels 2,263 miles across the country, it produces approximately 7,154 pounds of CO2, rounded to the nearest pound.
