Final answer:
We cannot determine the duration of the drive for 2 5/6 miles using 3/10 of a gallon of gas without additional information such as the fuel efficiency of the vehicle or the average speed of the drive. Further details are needed to make this calculation.
Step-by-step explanation:
To determine how long you drove if you traveled 2 5/6 miles and used 3/10 of a gallon of gas, we need additional information such as the fuel efficiency of the vehicle (miles per gallon) or the average speed at which you were driving. Without this information, we cannot calculate the duration of the drive. If the question pertains to the fuel consumption and not the duration of the drive, we would still need the vehicle's fuel efficiency to determine how many miles you can drive on 3/10 of a gallon of gas.
For example, if a car has a fuel efficiency of 30 miles per gallon, we can then calculate that 3/10 of a gallon would allow you to drive 9 miles (3/10 of 30 miles). However, if this is not the information you are seeking and you are interested in finding out the duration of your drive, then please provide the average speed at which you were driving, or state that you need help estimating the time based on the fuel used with an estimated fuel efficiency.