We are asked to determine the quotient of miles over hours for 12 5/6 miles and 2/3 hours. To do that we determine the quotient as follows:
Now we convert the mixed fraction into a regular fraction using the following relationship:
Applying the relationship we get:
Now, we solve the operation in the numerator:
Now, we use the following relationship to solve the quotient:
Applying the relationship we get:
Solving the operations:
Therefore, the quotient is 19.25 miles per hour.