cleardimond11 cleardimond11 10-03-2021 Mathematics contestada A car began a trip with a full tank of gas. During the first half of the trip, the car used 0.30 of the gas. During the last half of the trip, the car used 0.40 of the tank. What portion of a tank of gas is left when the trip is complete? A. 1/4 B. 3/10 C. 50% D. 0.75