Aptitude - True Discount - Discussion

Discussion Forum : True Discount - General Questions (Q.No. 2)
2.
The true discount on Rs. 2562 due 4 months hence is Rs. 122. The rate percent is:
12%
13 1 %
3
15%
14%
Answer: Option
Explanation:

P.W. = Rs. (2562 - 122) = Rs. 2440.

S.I. on Rs. 2440 for 4 months is Rs. 122.

Rate = 100 x 122 % = 15%.
2440 x 1
3

Discussion:
47 comments Page 4 of 5.

Deepan said:   1 decade ago
I cant understand the solution can anyone help me.

ARJUN---> said:   1 decade ago
@Shreya

Formula used by you is wrong.

It is,

amount=present worth(pw)+true discount(td)

and hence, its comes as

pw=amount-td

Gnana said:   1 decade ago
How 15% is possible, can any one help for it.

Aishu said:   1 decade ago
100*122/2440*(1/3)
1/3 can be written as 100*122*3/2440*1
by solving this equation we get the value 15%

Abhishek kumar tiwari said:   1 decade ago
What is the P.W ? I know 4 month is the 1/3 of the year. But I don't no P.W.

Yazhini said:   1 decade ago
Totally there are 12 months int the year. Hence 4/12months=1/3.

Rohith said:   1 decade ago
I didn't undersatnd the usage of 1/3 in this solution.

Can any one help me in sorting out this problem?

Rajeev said:   1 decade ago
Since time and intrest must be calculated in year so month convert into year.

Hannah said:   1 decade ago
Im not able to understand by seeing the sum which formula i have to use.

Kumar said:   1 decade ago
Are SI and td are equal. ? please explain.


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