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# Multi-step math problem. ( Unit Conversion helps)

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this is a multiple step problem (  2 problems).

A European car manufacturer reports that the fuel efficiency of the new MicroCar is 28.5 km/l highway and 22.0 km/l city. What are the equivalent fuel efficency rates in miles per gal?

after you solve

next question.

If gas costs \$3.50 per gal, how much would it cost to drive 500 miles in the city in this car ( assuming the fuel efficiency rating is accurate)?

Guest Oct 30, 2017
edited by Guest  Oct 30, 2017
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#1
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1 km  ≈ .621 miles

1 L  ≈ .264 gal

So......

28.5 km  = 28.5 *.621  ≈ 17.7 miles / .264 gal  ≈ 67.04 mpg

22 km  =  22 * .621  ≈ 13.66 miles / .264 gal  ≈  51.74 mpg

Cost for city driving  =  500 / 51.74  *  3.50  ≈  \$33.82

CPhill  Oct 30, 2017
#2
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God i love this website, and also i hate it. You make it seem so easy,  i wish i was good at math like you . Anyways, thank you so much for solving this math problems

Guest Oct 30, 2017

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