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Aptitude - Surds and Indices - Discussion

@ : Home > Aptitude > Surds and Indices > General Questions - Discussion

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"I do not seek. I find."
- Pablo Picasso
2. 

If a x - 1 = b x - 3 , then the value of x is:
b a

[A].
1
2
[B]. 1
[C]. 2[D].
7
2

Answer: Option A

Explanation:

Given a x - 1 = b x - 3
b a

a x - 1 = a -(x - 3)  =  a (3 - x)
b b b

x - 1 = 3 - x

2x = 4

x = 2.


Pooja said: (Sun, Sep 26, 2010 01:08:14 PM)    
 
I didn't understand for solve the method. Please explain.

Ravi Kiran said: (Tue, Oct 18, 2011 04:37:06 PM)    
 
@pooja

(b/a) can be written as (a/b)^-1.

Based on this concept this problem is solved.

Nem Prasad said: (Thu, Dec 8, 2011 06:21:38 PM)    
 
Can anybody tell me what is the concept through which this problem has been solved ?

Basavaraju said: (Fri, Jan 20, 2012 03:18:57 PM)    
 
I can not understand.

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