Question

The record for the Boston Marathon's wheelchair division is 1 gr8, 18 min, and 27 seconds. the Boston Marathon is 26.2 miles long . what was the average speed of the record winner of the wheelchair division?

at this rate, about how long would it take this competitor to complete a 30-mile race

Answer 1

Converting the time into hour

1 hour = 1 hour
18 minutes = 18 ÷ 60 = 0.3 hour
27 seconds = 27 ÷ 3600 = 0.0075

Total time = 1 + 0.3 + 0.0075 = 1.3075 hour

Speed = Distance ÷ Time
Speed = 26.2 ÷ 1.3075
Speed = 20.01 miles/hour (rounded to two decimal places

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Speed = 20.01 miles/hour
Distance = 30 miles
Time = Distance ÷ Speed = 30 ÷ 20.01 = 1.5 hours (rounded to one decimal place)