in Quantitative Aptitude edited by
479 views
0 votes
0 votes

A boatman goes $2$ km against the current of the stream in $1$ hour and goes $1$ km along the current in $10$ minutes. How long will it take to go $5$ km in stationary water?

  1. $40$ minutes
  2. $1$ hour
  3. $1$ hr $15$ min
  4. $1$ hr $30$ min
in Quantitative Aptitude edited by
12.0k points
479 views

1 Answer

2 votes
2 votes
let s = boatman’s speed in still water , r = river’s flow(speed)

s+r = 2 kmph (speed = distance/time)

s-r = 6 kmph(convert time given in minutes into hour)

thus , s=4kmph

hence, time = 5/4 hrs = 1.25 hr = 1 hour 15 minutes
58 points
Answer:

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true