Math CentralQuandaries & Queries


Question from Pramegh, a student:

In a motorbike race of 75 km, the winner completes the race with a lead of 300 meters and 8 seconds before the second rider. Considering the riders ride with an average speed, find the difference between their speeds with which they completed the race.
(Calculate up to 2 decimal places)

Hi Pramegh,

The important fact here is that rate (speed) is equal to distance divided by time.

The second motorbike travels that last 300 meters in 8 seconds. What is his speed in meters per second? At that speed how long did it take him to complete the 75 km? How long did it take the first rider? What was his speed?


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