1 a. 
Mike travels in an airplane a distance of 2160 miles. For onehalf of the distance, the airplane flies at a speed of 540 miles per hour, and for the rest of the distance, it flies at a speed of 680 miles per hour. How long does the trip take?


2 a. 
Mike's airplane trip took 3 hours. For onethird of that time, the airplane flew at a speed of 660 miles per hour, and for the rest of the time, it flew at a speed of 780 miles per hour. What distance did Mike travel?


3 a. 
Noah's airplane trip took 2.2 hours. For onehalf of that time, the airplane flew at a speed of 500 miles per hour, and for the rest of the time, it flew at a speed of 700 miles per hour. What distance did Noah travel?

