Buy Questpond's video subscriptions on huge discount.
DotNetFunda.com
Online: 1407
Home > Interviews > Aptitute Test >

If a^2+b^2=117 and ab=54 then find the value of a+b/a-b.

 Posted by Hariboopal on 2/25/2011 | Category: Aptitute Test Interview questions | Views: 12185 | Points: 40
Post | Interview FAQs | Exclusive Questions | Interview Home  
Answer:

Answer:

(a+b)^2=a^2+b^2+2ab
= 117+2*54=225
=> a+b=15


(a-b)^2=a^2+b^2-2ab
= 117-2*54=9
=> a-b=3



then a+b/a-b
=15/3=5


Asked In: Many Interviews | Alert Moderator 

Bookmark It

Comments or Responses

Posted by: Akiii on: 2/26/2011 | Points: 10
Good one, continue giving more Hariboopal.

Thanks and Regards
Akiii

Login to post response

More Interview Questions by Hariboopal


Latest Interview Questions