Question

Walter and his mother drove to Miami Florida. It took them 9 hours and 45 minutes to drive 658.125 miles. Their average speed was how many mph?

Answer 1

Answer: 67.5 mph

Explanation:

The formula for speed is:

= Distance / Time

Distance = 658.125 miles

Time will need to be converted to a decimal. You may convert only the minutes into hours as the hours are already hours.

= 45/60 minutes

= 0.75 hrs

= 9 + 0.75

= 9.75 hours

Speed = 658.125 / 9.75

= 67.5 mph