If necessary, round your answers to 1 decimal digit.

1 a.

Nancy travels in an airplane a distance of 1080 miles. For one-half of the distance, the airplane flies at a speed of 600 miles per hour, and for the rest of the distance, it flies at a speed of 740 miles per hour. How long does the trip take?

2 a.

Nancy roller skates for 4.2 hours with a constant speed of 14 mph and then for another 3 hours 59 minutes with a constant speed of 13 mph. What is her average speed for the total trip?

3 a.

A minibus drives 92 miles with a constant speed of 40 mph and another 360.1 miles with a constant speed of 78 mph. What is its average speed for the total trip?

Page 2

Answer Key

1 a.

The trip takes 1 hours and 37 minutes or 1.6 hours.

2 a.

Her average speed is 13.5 mph.

3 a.

Its average speed is 65.4 mph.

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