56. An airplane flew for 8 hours at an airspeed of x miles per hour (mph), and for 7 more hours at 325 mph. If the average airspeed for the entire flight was 350 mph, which of the following equations could be used to find x?

Answer and Explanation

Your Answer is

Correct Answer is K

Explanation

It can be seen from the meaning of the question that their total time and total distance are equal, so choose K.