If necessary, round your answers to 1 decimal digit.

1 a. Sarah travels in an airplane a distance of 1320 miles. For one-third of the distance, the airplane flies at a speed of 760 miles per hour, and for the rest of the distance, it flies at a speed of 560 miles per hour. How long does the trip take?

 
 
 
 
 
 
 
 
 
2 a. David's airplane trip took 4.6 hours. For one-half of that time, the airplane flew at a speed of 800 km/h, and for the rest of the time, it flew at a speed of 720 km/h. What distance did David travel?

 
 
 
 
 
 
 
 
 
3 a. An airplane flies for 5.9 hours with a constant speed of 1000 km/h and then for another 4 hours 46 minutes with a constant speed of 920 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. The trip takes 2 hours and 9 minutes or 2.2 hours.
2 a. David traveled 3496 km.
3 a. Its average speed is 964.2 km/h.


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