Aptitude - True Discount - Discussion
Discussion Forum : True Discount - General Questions (Q.No. 6)
6.
Goods were bought for Rs. 600 and sold the same for Rs. 688.50 at a credit of 9 months and thus gaining 2% The rate of interest per annum is:
Answer: Option
Explanation:
| S.P. = 102% of Rs. 600 = |  |
102 | x 600 |  |
= Rs. 612. |
| 100 |
Now, P.W. = Rs. 612 and sum = Rs. 688.50.
T.D. = Rs. (688.50 - 612) = Rs. 76.50.
Thus, S.I. on Rs. 612 for 9 months is Rs. 76.50.
| Rate = |
 |
100 x 76.50 |  % |
= 16 % |
|
Discussion:
20 comments Page 2 of 2.
Aparna said:
1 decade ago
Shall I know what is the formula for are how that 76.5 came here in the formula of rate?
Vignesh said:
1 decade ago
What is pw ?
Likhitha said:
1 decade ago
@Anjali.
(102/100)*600 = 612.
But I can't understand why?
P.W = (amount*100)/(R*T) this formula was used as real one is
P.W = (amount*100)/(100+(R*T).
(102/100)*600 = 612.
But I can't understand why?
P.W = (amount*100)/(R*T) this formula was used as real one is
P.W = (amount*100)/(100+(R*T).
Anjali singh said:
1 decade ago
Unable to understand how we get 102%of 600 = 612. What is the formula behind it?
(1)
Jyothi said:
1 decade ago
Purchase price = 600 consider it 100%.
Gain 2% on purchase price.
Present value of selling price = 100% + 2% = 102%.
Gain 2% on purchase price.
Present value of selling price = 100% + 2% = 102%.
Mukesh vyas said:
1 decade ago
Please resolve value 102%.
Sirisha said:
1 decade ago
As the gain is 2% then gain in Rupees is calculated as
gain=(2/100)*cost price
=(2/100)*600
=12
So the selling price that is the PW value becomes 600+12=612
Then TD=amount-PW=688.50-612=76.50
from this we claculate R using the formula
P.W=(100*T.D)/(R*T)
gain=(2/100)*cost price
=(2/100)*600
=12
So the selling price that is the PW value becomes 600+12=612
Then TD=amount-PW=688.50-612=76.50
from this we claculate R using the formula
P.W=(100*T.D)/(R*T)
Abbin said:
1 decade ago
On reading the Q, I had a confusion that the 2% is for Rs.600 or Rs.688.50. I think that also should be mentioned in the question.
Omer said:
1 decade ago
How to put 9.375 in fraction in easy method to get 16*2/3
Kindly help me out
Kindly help me out
Aravind said:
1 decade ago
SP = 102 % of 600 cannot be rs. 612
Hence the answer is wrong
please correct the error
Regards
Aravind
Hence the answer is wrong
please correct the error
Regards
Aravind
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