Aptitude - Compound Interest - Discussion
Discussion Forum : Compound Interest - General Questions (Q.No. 11)
11.
Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is:
Answer: Option
Explanation:
| C.I. |
|
|||||||||||
|
||||||||||||
| = Rs. 840. |
 Sum = Rs. |
 |
420 x 100 |  |
= Rs. 1750. |
| 3 x 8 |
Discussion:
40 comments Page 2 of 4.
Vikas said:
7 years ago
How come 840?
(1)
Kiran said:
7 years ago
How does -4000 came?
(3)
Saraswati said:
7 years ago
400*2+40=840.
S.I = 420
p = (100*420/3*8) = 1750.
S.I = 420
p = (100*420/3*8) = 1750.
Gourab Satpathy said:
7 years ago
Well explained @Priya P.
Ajinkya said:
8 years ago
Answer Is wrong.
Let me explain,
CI=40000(1+10/2*100)^2*2 -40000
Because in problem said that compounded half-yearly.
Let me explain,
CI=40000(1+10/2*100)^2*2 -40000
Because in problem said that compounded half-yearly.
Sivaprasanth said:
8 years ago
Thankyou @Rakesh.
MALINI MADHAVAN said:
9 years ago
@Rakesh.
Thank you very much for giving the clear explanation.
Thank you very much for giving the clear explanation.
Dipta said:
9 years ago
Can I do it like this?
[(3 * 8 * P) / 100] = 1/2[4000 (1 +10/100) ^2 - 4000].
[(3 * 8 * P) / 100] = 1/2[4000 (1 +10/100) ^2 - 4000].
Chandan shaw said:
9 years ago
If the C.I on a certain sum for 3 years at 5% be rs 50.44. What will be S.I?
Please help me in short trick.
Please help me in short trick.
Bhupathi said:
9 years ago
420 * 100/ (3 * 8) = 1750.
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