If necessary, round your answers to 1 decimal digit.

1 a. Cindy's airplane trip took 2.6 hours. For one-third of that time, the airplane flew at a speed of 800 miles per hour, and for the rest of the time, it flew at a speed of 780 miles per hour. What distance did Cindy travel?

 
 
 
 
 
 
 
 
 
2 a. A van moves for 4.7 hours with a constant speed of 39 km/h and then for another 1 hour 41 minutes with a constant speed of 57 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. Emily travels in an airplane a distance of 2040 miles. For one-half of the distance, the airplane flies at a speed of 500 miles per hour, and for the rest of the distance, it flies at a speed of 520 miles per hour. How long does the trip take?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. Cindy traveled 2045.3 miles.
2 a. Its average speed is 43.8 km/h.
3 a. The trip takes 4 hours and 0 minutes or 4 hours.

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