Can anyone give a moment to solve the question?
Attachments:
Answers
Answered by
1
width of the river d=4 miles
speed of water v=2 miles/h
minimum time only taken to cross the river when the speed of boat is parallel to the resultant speed of v and u(when u= speed of boat= 4miles/h)
now , the resultant speed w=√(v)2+(u)2
d=w t
minimum time t=4/2√5=2√5 h
PrakharUpadhyay:
You just copied the answer. Well this isn't the right answer.
But the answer is (A)
Similar questions