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2011 AMC 10A Problem 15

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2011 AMC 10A Problem 15AMC 10 Step by Step

Name: Date: September 13, 2026

Linear Equations & Word Problems · difficulty 3 of 5 · about 3 min · position P11-15

Roy bought a new battery-gasoline hybrid car. On a trip the car ran exclusively on its battery for the first 40 miles, then ran exclusively on gasoline for the rest of the trip, using gasoline at a rate of 0.02 gallons per mile. On the whole trip he averaged 55 miles per gallon. How long was the trip in miles?

A)
$140$
B)
$240$
C)
$440$
D)
$640$
E)
$840$

2011 AMC 10A Problem 15

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