If necessary, round your answers to 1 decimal digit.

1 a. An airplane flies for 6.3 hours with a constant speed of 800 km/h and then for another 5 hours 53 minutes with a constant speed of 680 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
2 a. A police car drives 145.2 km with a constant speed of 44 km/h and another 218.7 km with a constant speed of 41 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. Pete roller skates for 0.2 hours with a constant speed of 14 mph and then for another 2 hours 17 minutes with a constant speed of 14 mph. What is his average speed for the total trip?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. Its average speed is 742.1 km/h.
2 a. Its average speed is 42.2 km/h.
3 a. His average speed is 14 mph.

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