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Aptitude - True Discount - Discussion

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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."
- Albert Einstein
4. 

A man wants to sell his scooter. There are two offers, one at Rs. 12,000 cash and the other a credit of Rs. 12,880 to be paid after 8 months, money being at 18% per annum. Which is the better offer?

[A]. Rs. 12,000 in cash[B]. s. 12,880 at credit
[C]. Both are equally good[D]. [NIL]

Answer: Option D

Explanation:

P.W. of Rs. 12,880 due 8 months hence
= Rs. 12880 x 100
100 + 18 x 8
12
= Rs. 12880 x 100
112
= Rs. 11500.


Tanu said: (Thu, May 19, 2011 08:30:54 AM)    
 
Why that 100 is adding in denominator?
Can any one plz explain properly......

Omer Bin Mohd(Hyd)9959542712 said: (Wed, Jul 13, 2011 11:39:27 PM)    
 
Hi Tanu
As per formula of Present Worth (P.W)

100 x Amount/100 + (R = Rate perannum x T = Time Year)

12000 is better as such 12880 is due amount after 8 Months

=100+18*8/12
= 100+12
=112

Rad said: (Mon, Aug 1, 2011 11:41:07 AM)    
 
Can any one please explain properly ?

Bj said: (Sat, Aug 6, 2011 10:28:39 AM)    
 
Not understandable. Explain Formula clearly.

Sanjay said: (Wed, Sep 14, 2011 11:15:18 PM)    
 
Hey let me explain
here given
P.W. Is 12000
now if we calculate the P.W. Of Rs. 12880
which will recieved after 8 months
thus formula
P.W.=100*amt./100+(R*T)
Is used.

Madhu.T said: (Tue, Sep 27, 2011 08:54:46 PM)    
 
Just see my ans:-
By taking after 8 months how much we will get excess money
= 12880-12000 = 880/- ..........(Pls remind this),

If we take cash 12000/- now it self the interest would be after 8 months @ 18% P.A

= 12000*(18/100)*(8/12)
= 1440

so instead of going for credit, cash is better.

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