Raman covers 1 km in 8 min while suman covers the same distance in 10 min. By what distance does Raman beat Suman?

Raman covers 1 km in 8 min
and suman cover 1 km in 10 min.
If they starts together, then distance covered by suman in 8 min
= (1000/10) x 8 = 800 m
∴ Raman will beat suman by (1000 - 800 ) m = 200 m