Problema Solution
Grace owns a car with a 2121-gallon gas tank. After filling it, she used 16 and five sevenths16
5
7 gallons driving to her mother's. Find the number of gallons left.
Answer provided by our tutors
Total gas in the tank: 21 gal
Amount of gas spent: 16 + 5/7 gal
Amount of gal left:
21 - (16 + 5/7) = 21 - 16 - 5/7 = 5 - 5/7 = (5*7 - 5)/7 = 30/7 = 4 2/7 gal