Answer:
see explanation
Explanation:
used formulla: s=d/t
or St =d
or t=d/s.
speed(s) = 10km/hr =2.78m/s
distance(d) = 4 km = 4000m
time(t) = ?
we have,
t= d/s
t = 4000/2.78
t = 1438 s
1438 s =23.96 min = 0.39 hrs
:- ananth finished at 5 hrs 23 min.
hope this will help u..