-

SSC :: SSC CHSL Quantitative Aptitude

SSC CHSL » Quantitative Aptitude » General Questions - Discussion

1 .


A and B walking around a circular park at a speed of 2 rounds per hour and 3 rounds per hour respectively. If they start at 8 a.m. from the same point in opposite directions, then how many times shall they meet each other before 9.30 a.m.?

[ A ]    5
[ B ]    6
[ C ]    7 right
[ D ]    8
Answer : Option C
Explanation :
Relative speed = Speed of A + Speed of B

(they walk in opposite directions)

= 2 + 3 = 5 rounds per hour

They cross each other 5 times in 1 hr and 2 times in $1^ 2$ hr

Time duration from 8 am to 9.30 am = 1.5 hour

Hence they cross each other 7 times before 9.30 am
Workspace Report error
Write your comments here:
Name *: Email:

Copyright 2018 | Privacy Policy | Terms and Conditions | Contact us | Advertise