Query Detail : RBI Grade B Phase I

A runs 25% faster than B and is able to allowed B a lead of 7 metres to end a race in dead heat. What is the length of the race?
Garima,   November 6th 2019,  
RBI Grade B Phase I

The ratio their speeds is 5:4;

So the ratio of distance covered by them will also be 5:4

The difference in the ratio of distance is 1, but as per q given it should be  7 meters.

Therefore, length of race =5*7=35 meters