Aptitude - Banker's Discount - Discussion

Discussion Forum : Banker's Discount - General Questions (Q.No. 1)
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 3 of 7.

Smitha said:   9 years ago
1/3 because they said 4 months.

We know that 12months = 1 year hence,
4months = ?
Which is (4months * 1year) ÷ 12months.
Which is 1/3 year.

N.Rajashekar said:   9 years ago
How 105 came?

Svs said:   9 years ago
How 1/3 came? Not getting this.

Sweety said:   9 years ago
How 4\12 came? Explain me.

Raama said:   9 years ago
How can we define T.D other than the formula, just like B.D?

MOLLAH said:   9 years ago
Nice question and excellent solution. Thanks!

Anu said:   9 years ago
How can we take rate = 15% directly?

Sreenivasulu said:   9 years ago
How the formula exist for amount = bd * td/bd - td?

Manu said:   9 years ago
Somebody, please explain why TD formula 3time, and when to use, how to use it?

Before solving this question, I saw formulas but TD has three different way, confused and as per the TD FORMULA how 100 comes in formula?

BISWAJIT SETHY said:   9 years ago
Here T stands for Time or Number of Years.

Why T = 1/3?

Because we can write 4 months as 1/3 years. (Ref: 4/12 = 1/3)


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