If necessary, round your answers to 1 decimal digit.

1 a. Grace roller skates 25.5 miles with a constant speed of 18 mph and another 11 miles with a constant speed of 12 mph. How much time in total does she take to travel these distances?

 
 
 
 
 
 
 
 
 
2 a. An airplane flies for 4.3 hours with a constant speed of 620 mph and then for another 5 hours 28 minutes with a constant speed of 820 mph. What distance did it go?

 
 
 
 
 
 
 
 
 
3 a. David rides his bike for 2 hours 25 minutes with a constant speed of 6 mph and then for another 2 hours 55 minutes with a constant speed of 12 mph. What distance did he go?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. She takes 2 hours and 20 minutes to travel the two distances.
2 a. It traveled a distance of 7148.7 miles.
3 a. He traveled a distance of 49.5 miles.


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