If necessary, round your answers to 1 decimal digit.

1 a. A van moves for 5.4 hours with a constant speed of 65 mph and then for another 3 hours 56 minutes with a constant speed of 60 mph. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
2 a. Abigail roller skates for 1 1/3 hours with a constant speed of 18 km/h and then for another 2 hours 10 minutes with a constant speed of 24 km/h. What is her average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. An airplane flies for 0.4 hours with a constant speed of 840 km/h and then for another 1 hour 43 minutes with a constant speed of 640 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. Its average speed is 62.9 mph.
2 a. Her average speed is 21.7 km/h.
3 a. Its average speed is 677.8 km/h.

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