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Aptitude - Banker's Discount - Discussion

Discussion Forum : Banker's Discount - General Questions (Q.No. 1)
Banker's Discount
1.
The banker's discount on a bill due 4 months hence at 15% is Rs. 420. The true discount is:
Rs. 400
Rs. 360
Rs. 480
Rs. 320
Answer: Option
Explanation:
T.D.
= B.D. x 100
100 + (R x T)
= Rs. 420 x 100
100 + 15 x 1
3
= Rs. 420 x 100
105
= Rs. 400.
Discussion:
70 comments Page 4 of 7.
Baku krishnas said:   1 decade ago
T = No.of mints\ total year mints.
T = 4\12.
T = 1\3 dudes.
Raama said:   9 years ago
How can we define T.D other than the formula, just like B.D?
K shravanreddy said:   1 decade ago
Actually what is the difference between T. D, S. I and B. D.
Jessi said:   1 decade ago
What is the need to sub 20. Saleem said in short cut.
Saleem said:   1 decade ago
short cut:

p*r*t

420*15%*4/12 = 20

420-20 = 400
Sreenivasulu said:   9 years ago
How the formula exist for amount = bd * td/bd - td?
Karthick said:   1 decade ago
How to found short way to solve this problem?
Anam charan patra said:   1 decade ago
How to found short way to solve this problem?
MOLLAH said:   9 years ago
Nice question and excellent solution. Thanks!
Priti said:   8 years ago
How 420*100/105 =400? please explain anyone.
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