If necessary, round your answers to 1 decimal digit.

1 a. Noah rides his motorcycle for 3.8 hours with a constant speed of 89 km/h and then for another 1 hour 21 minutes with a constant speed of 38 km/h. What is his average speed for the total trip?

 
 
 
 
 
 
 
 
 
2 a. An airplane flies 5600 km with a constant speed of 1000 km/h and another 2772 km with a constant speed of 880 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. Sarah rides her bike 19.8 miles with a constant speed of 6 mph and another 41 miles with a constant speed of 13 mph. What is her average speed for the total trip?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. His average speed is 75.6 km/h.
2 a. Its average speed is 956.8 km/h.
3 a. Her average speed is 9.4 mph.

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