CLEAR
Toprankers-Info

+91 7676564400

Mobile App

Get it on Google Play
Discussions
Select Date
Tags:

Articles

Discussions
Submit Discussion
AVINASH KUMAR

· started a discussion

· 1 Months ago

correction (Question: 108530.0 )

answer is wrong it should be RHS 12/35
correct me if i m wrong

Question:

HCF and LCM of two numbers x and y is 6 and 210 respectively. If x + y = 72, then which of the following relation is correct?

Options:
A) \(\cfrac{1}{x}+\cfrac{1}{y}=\cfrac{3}{35}\)
B) \(\cfrac{1}{x}+\cfrac{1}{y}=\cfrac{2}{35}\)
C) \(\cfrac{1}{x}+\cfrac{1}{y}=\cfrac{35}{2}\)
D)  Data inadequate
Solution:

Its given that, HCF and LCM of two numbers x and y is 6 and 210 respectively. 


[since, product of two numbers = HCF * LCM ]


Therefore, xy = 6*210 = 1260____(1)



Now, also given that x + y = 72____(2)



Now, find its reciprocal,



1/x +1/y = (x+y)/xy = 72/1260 = 2/35



Hence, 1/x + 1/y = 2/35  is correct.

Ajeet

· commented

· 1 Months ago

Yet to be approved!

shikha shah

· commented

· 1 Months ago

I am getting same answer
-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