Question

in a 1000 m run arun takes a headstart of 40m and beats tarun at 10 m . If tarun gets a headstart of 40m then at what distance will he beat arun

Answer 1

By getting 40m headstart ,in time x , Arun ran 960 m
In the same time tarun ran 990m
Thus Arun beat him by 10m,
Thus if tarun got a headstart of 40m he would defeat arun by 40m