 # True discount

The present worth of the money is important to understand before dwelling into the true discount. Any money that is to be paid before the due date is cleared off for debt is known as the present worth of the money.

True discount can be understood in reference to this present worth. The difference between the present worth of the money and the amount is known as the true discount.

Also, it can be stated as the interest in any present worth for the amount of time the debt is due to be discharged.

## True Discount and Bankers Discount Formula There is always a big confusion between these two concepts. To understand both the concepts we will use an example.

Let us suppose that P has borrowed Rs. 1000 from Q. This amount taken by P has to be returned with interest after a period of 1 year. The market interest to be paid here is 5%.

For the payment, P gives Q a note having a face value of Rs. 1050. After 6 months Q demands the money to be paid immediately by P. He cannot wait for 6 more months for the repayment.

Thus, Q goes to the bank and gives the note with the face value of Rs. 1050 back to P. So, the present value of this Rs. 1050 note is calculated as,

PV x (1 + rt) = FV. Here, r is the simple interest, FV is the face value, and t is time. So, true value or present value here will be, 1050/1.025 = 1024.4.

Thus, true discount, in this case, is the difference between face value and true value. That is 1050 – 1024.4 = Rs. 25.6.

But the bank does not pay the 1024.4 to B. The bank uses another formula called banker’s discount rather than the true discount. So, in this case, Banker’s discount = FV x r x t = 1050 x 0.05 x 1/2 = Rs. 26.25.

Thus, this example clearly explains the difference between Banker’s discount and the true discount.

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Examples on True Discount

Q. Suppose on Rs. 260 currently, the true discount is Rs. 20 after some time. Find out what will be the true discount on the same amount of money due after the passage of a quarter of the time. The rate of interest, in this case, remains the same.

The formula to calculate the true discount directly is,

True discount = Rate x amount x time/(100 + (time x rate)

Thus, it becomes 20 = rate x time x 260/100 + (rate x time)

=> RT = 100/12.

So, required sum true discount = 260 x R x T/4/100+ RT/4 = 260 x 100/12/(400 + 100/12)

=> 269/49 = Rs. 5.3

## Practice Questions on True Discount

Here True discount=TD, Bankers discount=BD

Q. The TD of Rs. 1624 is the same as the BD of Rs. 1600 at the same time period and for the same rate of 6%. Find out the time interval between the legally due date and the date of discounting.

A. 2 months                B. 3 months                     C. 4 months                    D. 6 months

Q. For 1 year on a certain sum, Banker’s gain is 1/10 of the TD. What will be the rate of percent per annum?

A. 9 1/11 %                  B. 10 %                           C. 11 1/11%                         D. None of the above

Q. On Rs. 260, Rs. 20 is the TD after a certain time period. Find out what will be the TD on the same sum which will be due after 1/2 of the former time. Here, the rate of interest remains the same.

A. Rs. 10                      B. Rs. 10.40                  C. Rs. 11.20                      D. Rs. 12

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Ashwani

Three companies sell an item at different profits and discounts. The percentage of discount given by the company A is twice the discount percentage given by company B. Company C’s profit is 10 times its percentage of discount. The prices of A, B and C are Rs. 2000, Rs. 3000 And Rs 2500 respectively. The ratio of profit percentage of A, B and C is 20: 25: 12. The percentage of discount given by Company B is 100/24% more than the percentage of discount given by company C. If the difference in profit of one item by companies A and… Read more » Guest
Bibek

the mp of a laptop is rs.75000. after allowing a certain percent of discount and including 15%VAT, the laptop is sold at rs.73312.5.calculate the discount percent and VAT amount Guest
Yogesh Chaudhary

May be if I am not wrong
Let x%discount applied on selling price.
Selling price becomes S.P.(1-x/100)
=75000(1-x/100)
Now 15%gets applied, this becomes
=75000(1-x/100)*1.15=73312.5
gives X=15%(discount)
Vat amount .15of 75000*.85
=9562.5

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