Question

The water of a 0.5 km wide river is flowing with a velocity of 4 km/hr. A boatman standing on one of the bank of the river wishes to take his boat to a point on the opposite bank exactly in front of his present position. He can row his boat with a velocity of 8 km/hr relative to the water. The direction in which he should row boat & time taken to cross the river will respectively be

Answer 1

Answer:

30 degree down stream from Across the river perpendicular as shown.

time shall be 4.33 Minutes.