If necessary, round your answers to 1 decimal digit.

1 a. Mary roller skates for 15 minutes with a constant speed of 18 mph and then for another 2 hours 45 minutes with a constant speed of 12 mph. What distance did she go?

 
 
 
 
 
 
 
 
 
2 a. An airplane flies 840 miles with a constant speed of 600 mph and another 1829 miles with a constant speed of 620 mph. How much time in total does it take to travel these distances?

 
 
 
 
 
 
 
 
 
3 a. Bob rides his horse 46.2 miles with a constant speed of 14 mph and another 23.6 miles with a constant speed of 9 mph. How much time in total does he take to travel these distances?

 
 
 
 
 
 
 
 
 
Page 2

Answer Key

1 a. She traveled a distance of 37.5 miles.
2 a. It takes 4 hours and 21 minutes to travel the two distances.
3 a. He takes 5 hours and 55 minutes to travel the two distances.

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