Question

Robert was able to travel 292 miles in 4 hours and uses 38 l of gasoline. If gas costs $2.09 per gallon, how much did the trip cost robert?

Answer 1

we know that

1 gal = 3.7854 liters

Convert 38 l of gasoline to gallon

by proportion

`(1)/(3.7854) (gal)/(l)=(x)/(38)(gal)/(l)\\\\ 3.7854*x=38\\ \\ x=38/3.7854\\\\ x=10.04\ gal`

Find the cost

we know that

The gas costs $2.09 per gallon

so

Multiply $2.09 by the total of gallons

$2.09*10.04=$20.98

therefore

the answer is

$20.98