Problema Solution
A car traveled 500 kilometers on 45 liters of gas. Express the cars consumption in miles per gallon. (Note: 1 mile= 1.61 kilometers and 1 gallon= 3.79 liters)
Answer provided by our tutors
1 mile= 1.61 kilometers
1 kilometer = 1/1.61 mile
500 kilometer = 500(1/1.61) mi = 310.559 mi
1 gal = 3.79 liters
1 liter = 1/3.79 gal
45 liters = 45(1/3.79) gal = 11.87 gal
the cars consumption in miles per gallon is:
310.559/11.87 miles per gallon = 26.16 miles per gallon.