If necessary, round your answers to 1 decimal digit.

1 a. Mike rides his bike 28.5 miles with a constant speed of 18 mph and another 35 miles with a constant speed of 12 mph. What is his average speed for the total trip?

 
 
 
 
 
 
 
 
 
2 a. A police car drives 269.1 km with a constant speed of 69 km/h and another 292.5 km with a constant speed of 109 km/h. What is its average speed for the total trip?

 
 
 
 
 
 
 
 
 
3 a. Abigail's airplane trip took 2.4 hours. For one-third of that time, the airplane flew at a speed of 600 km/h, and for the rest of the time, it flew at a speed of 1000 km/h. What distance did Abigail travel?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. His average speed is 14.1 mph.
2 a. Its average speed is 85.3 km/h.
3 a. Abigail traveled 2080 km.

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