Question

When Amy roller-skates, she moves 90 yards per minute. What is her speed in miles per hour? Round your answer to the nearest hundredth.

Answer 1

Amy roller-skates 3.07 mile/hr

Explanation:

90 yd/min = x mi/hr

90 yd/min * 60 min/hr = 5400 yd/hr

1 yard = 1760 mile

1 second= 1/3600 hours

5280 ft/mile / 3 ft/yd = 1760 yd/mi

5400 yd/hr / 1760 yd/mile = 3.06818 mile/hr

Round to the hundredth place.