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:
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%. |
|
Discussion:
47 comments Page 2 of 5.
Raghul said:
6 years ago
Easy, I'll explain:
T.D =122;Amount = 2562.
Hence, initial amount = 2562 - 122 = 2440.
Pnr/100 = 122.
2440*4/12*x/100 = 122.
Ans:x = 15%.
T.D =122;Amount = 2562.
Hence, initial amount = 2562 - 122 = 2440.
Pnr/100 = 122.
2440*4/12*x/100 = 122.
Ans:x = 15%.
(2)
Priyanka said:
1 decade ago
Rate percent is normally calculated for a year by doing 30.5/2440 we are not calculating for a year since 30.5 corresponds to a month only.
Slovan said:
1 decade ago
What about this?
122= 4months => 1month = 30.5 => for a year 12*30.5= 366
2562-122= 2440
366/2440= 0.15 => 15%
122= 4months => 1month = 30.5 => for a year 12*30.5= 366
2562-122= 2440
366/2440= 0.15 => 15%
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
Formula used by you is wrong.
It is,
amount=present worth(pw)+true discount(td)
and hence, its comes as
pw=amount-td
Sravanthi said:
1 decade ago
Is present worth and principal amount same here?
But in the previous question he calculated pw is 100 and principal is 122?
But in the previous question he calculated pw is 100 and principal is 122?
Rahul Sharma said:
3 years ago
Simply solution :
2862-122 = 2440,
(122/2440)*100 = 5% --- for 4 months
Then for 12 months, it will be 5% * 3 = 15%.
2862-122 = 2440,
(122/2440)*100 = 5% --- for 4 months
Then for 12 months, it will be 5% * 3 = 15%.
(9)
Raman said:
10 years ago
2562 is money = B.D = 122.
2562-122 = 2440.
Then 4/12 = 1/3.
1/3 = 122 days.
1/12 = 366 days.
100*366/2440 = 15%.
2562-122 = 2440.
Then 4/12 = 1/3.
1/3 = 122 days.
1/12 = 366 days.
100*366/2440 = 15%.
Suyeb said:
1 decade ago
What does true discount mean? is it means the amount of interest for a certain time of a certain amount of money?
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?
Can any one help me in sorting out this problem?
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%
1/3 can be written as 100*122*3/2440*1
by solving this equation we get the value 15%
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