Subject :IMO Class : Class 8
A boat goes downstream and covers the distance between two ports in 4 hours, while it covers the same distance upstream in 5 hours. If the speed of the stream is 2 km/hr, find the speed of boat in still water.
A16 km/hr
B18 km/hr
C20 km/hr
D15 km/hr
i dont understand
Ans 1:
Class : Class 8