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Stan Moneymaker needs 15 gallons of gasoline to top off hisâ automobile's gas tank. If he drives an extra eight milesâ (round trip) to a gas station on the outskirts ofâ town, Stan can save â$0.10 per gallon on the price of gasoline. Suppose gasoline costs â$3.00 per gallon andâ Stan's car gets 25 mpg forâ in-town driving. Each mile that Stan drives creates one pound of carbon dioxide. Each pound of CO2 has a cost impact of â$0.02 on the environment. What areâ Stan's savings per mile for the eight mile extraâ trip, including the effect of environmentalâ costs?

Respuesta :

pedrocarratore

Answer:

$0.0475/mile

Explanation:

By getting 15 gallons of gasoline at $0.10 less per gallon, Stan can save $1.50 on the price of gasoline.

If his car gets 25 mpg, assuming a price of $3.00 per gallon, the cost of the 8 mile trip is:

[tex]C_t =\$3.00*\frac{8}{25}=\$0.96[/tex]

If the environmental cost is $0.02 per mile traveled, the total environmental cost is:

[tex]C_e = \$0.02*8=\$0.16[/tex]

His savings per mile, for the 8 mile trip are:

[tex]S=\frac{\$1.50-\$0.96-\$0.16}{8}\\S=\$0.0475/mile[/tex]

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