Aptitude - True Discount - Discussion
Discussion Forum : True Discount - General Questions (Q.No. 11)
11.
Rs. 20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?
Answer: Option
Explanation:
S.I. on Rs. (260 - 20) for a given time = Rs. 20.
S.I. on Rs. 240 for half the time = Rs. 10.
T.D. on Rs. 250 = Rs. 10.
 T.D. on Rs. 260 = Rs. |
 |
10 | x 260 |  |
= Rs. 10.40 |
| 250 |
Discussion:
24 comments Page 3 of 3.
Pavan G J said:
5 years ago
It is correct, just take rt/100 = 1/24.
Smitha said:
4 years ago
T.D = 20
Amount = 260
P.w = Amount - TD = 240.
S.I on p.w = 20.
By formula:
R * T = S.I * 100/p.w = 25/3.
Again by question:
Td = p.w * R * T/100.
Where the Time is half so R*T/2.
i.e 25/6.
We get TD = 10.49.
Amount = 260
P.w = Amount - TD = 240.
S.I on p.w = 20.
By formula:
R * T = S.I * 100/p.w = 25/3.
Again by question:
Td = p.w * R * T/100.
Where the Time is half so R*T/2.
i.e 25/6.
We get TD = 10.49.
(2)
Abi said:
4 years ago
@Smitha.
I am getting 10 as answer.
I am getting 10 as answer.
Rda said:
3 years ago
Thanks @Wasim Ajaz.
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