If necessary, round your answers to 1 decimal digit.

1 a. Bob rides his horse for 4.5 hours with a constant speed of 11 mph and then for another 2 hours 23 minutes with a constant speed of 9 mph. What is his average speed for the total trip?

 
 
 
 
 
 
 
 
 
2 a. Grace rides her horse 96 km with a constant speed of 15 km/h and another 90.3 km with a constant speed of 18 km/h. What is her average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. An airplane flies 340 km with a constant speed of 680 km/h and another 304 km with a constant speed of 960 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. His average speed is 10.3 mph.
2 a. Her average speed is 16.3 km/h.
3 a. Its average speed is 788.6 km/h.

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