SOLUTION: Liz recently took a road trip. she bought 30 gallons of gasoline for $3.18 per gallon and 10 gallon at a price of $3.75 per gallon. she filled her tank once on the way back with 20
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Question 974247: Liz recently took a road trip. she bought 30 gallons of gasoline for $3.18 per gallon and 10 gallon at a price of $3.75 per gallon. she filled her tank once on the way back with 20 gallon at $3.65 per gallon . what was the average cost of fuel per gallon on her trip? Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website! Prices in dollars per gallon, and volume in gallons. Uniform Rates, P*V=D for PRICE, VOLUME, DOLLARS. P is a rate.
_____________________PRICE___________VOL__________Money
First Buy____________3.18____________30___________(3.18)(30)
Next Buy_____________3.75____________10__________(3.75)(10)
Trip back____________3.65____________20__________(3.65)(20)
TOTALS_______________________________60__________205.9
The COST for the trip was 205.9 dollars. DOLLARS!! The PRICE in dollars per gallon was .
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3.43 dollars per gallon, the average PRICE.
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