David drives his car 66km in 45mins. What is his average speed in km/hr?
Question
David drives his car 66km in 45mins. What is his average speed in km/hr?
Solution
Sure, here's how you can calculate David's average speed:
Step 1: Convert the time from minutes to hours because the speed is required in km/hr. There are 60 minutes in an hour. So, 45 minutes is 45/60 = 0.75 hours.
Step 2: Use the formula for speed which is distance/time. The distance David drove is 66km and the time is 0.75 hours.
Step 3: Substitute the values into the formula: speed = 66km / 0.75hr = 88 km/hr.
So, David's average speed is 88 km/hr.
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