Hello, hisajesh!

I had to baby-talk my way through it . . .

can run 1 km in 4 minutes 51 seconds and in 5 minutes.

How many meters start can A give B in a 1 km race, so that the race may end in a dead heat?

Answer: 30 meters.

runs 1000 m in 291 seconds.

runs 1000 m in 300 seconds.

His speed is: .

In 291 seconds, runs only: .

Therefore, should get a 30-meter headstart.