CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
Mahima chhabra

· started a discussion

· 1 Months ago

Ques 71 (Question: 186067.0 )

From where we get 5/18 when we are calculating the speed of man

Question:
A motorist travels along the boundary of a square field of area 1476225 m2, at 36 km/hr. He returns to starting point in–
Options:
A) 8 min 8 sec
B) 6 min 8 sec
C) 8 min 6 sec
D) 6 min 6 sec
Solution:
Ans: (c) Perimeter of the square field = \(\sqrt{1476225}\)   m

= 4 × 1215 m = 4860 m

speed of the man = 36 km/h 

=  36 × \(\cfrac{5}{18}\)

= 10 m/s 

Time taken by motorist =  \(\cfrac{4860}{10}\)   seconds

= 486 seconds

= 8 min. 6 sec.

Knowledge Expert

· commented

· 1 Months ago

Dear student
As we are converting km/h into m/sec
so we have multiplied 5/18

Keep learning
Team TR
-logo
We at aim to provide most comprehensive content & test for practice which is carefully divided into various chapters and topics to help you focus on your weak areas.Our Practice mock test gives you unmatched analytics to help you realize your strong areas,time management and improvement areas.Our Short & Crisp notes on each topic will help you to quickly revise the topic along with the tips & tricks of the exams.
More About
-Info
-Info

Mobile App

Get it on Google Play
About Us Campus Ambassador Careers Contact Us Refund Policy

All Rights Reserved Top Rankers

User Policy
Disclaimer
Terms & Conditions