Question

A man can swim at a speed of 5km/h. He wants to cross a 1.5 kmwide river flowing at 3 km /h. He keeps himself always at the angle of 60° with flow direction. The time taken by him to cross river will be: a)0.25 hr b)0.35 hr c)0.45 hr d)0.55 hr

Answer 1

he needs 0.45 he to cross river