If necessary, round your answers to 1 decimal digit.

1 a. David's airplane trip took 4.6 hours. For one-third of that time, the airplane flew at a speed of 600 km/h, and for the rest of the time, it flew at a speed of 960 km/h. What distance did David travel?

 
 
 
 
 
 
 
 
 
2 a. Caleb's airplane trip took 4.8 hours. For one-half of that time, the airplane flew at a speed of 780 miles per hour, and for the rest of the time, it flew at a speed of 680 miles per hour. What distance did Caleb travel?

 
 
 
 
 
 
 
 
 
3 a. Mary travels in an airplane a distance of 2280 miles. For one-fourth of the distance, the airplane flies at a speed of 620 miles per hour, and for the rest of the distance, it flies at a speed of 540 miles per hour. How long does the trip take?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. David traveled 3864 km.
2 a. Caleb traveled 3504 miles.
3 a. The trip takes 4 hours and 5 minutes or 4.1 hours.


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