If a man rows at the rate of 6 kmph in still water and his rate aginst the current is 4.5 kmph, then the mans rate along the current is
4km/hr
5 km/hr
6 kmph
7.5 kmph
Explanation:
still water speed 6 kmph.
upstream 4.5 kmph.
speed decreased due to the water current 6-4.5 =1.5kmph which is the speed of the stream
while rowing downstream this speed will add up to the rowing speed in still water
so the speed downstream i.e along the current is 6+1.5 =7.5 kmph
still water speed 6 kmph.
upstream 4.5 kmph.
speed decreased due to the water current 6-4.5 =1.5kmph which is the speed of the stream
while rowing downstream this speed will add up to the rowing speed in still water
so the speed downstream i.e along the current is 6+1.5 =7.5 kmph