In a 100 m race A covers the distance in 36 seconds and B in 45 seconds in this A beats B by? 20 m , 24 m , 28 m , 30 m

Answer: 20 m

To solve this, we need to find how much distance B covers in the time it takes A to finish the race.

First, we calculate B's speed:

Now, in 36 seconds (the time A takes to finish the race), B will cover:

Since A finishes the race in 36 seconds, but B only covers 80 meters, A beats B by 100 - 80 = 20 meters.

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