Aptitude - Compound Interest - Discussion
Discussion Forum : Compound Interest - General Questions (Q.No. 13)
13.
The difference between simple interest and compound on Rs. 1200 for one year at 10% per annum reckoned half-yearly is:
Answer: Option
Explanation:
| S.I. = Rs |  |
1200 x 10 x 1 |  |
= Rs. 120. |
| 100 |
| C.I. = Rs. |  |
1200 x | |
1 + | 5 | |
2 | - 1200 |  |
= Rs. 123. |
| 100 |
Difference = Rs. (123 - 120) = Rs. 3.
Discussion:
53 comments Page 3 of 6.
Himesh said:
9 years ago
Why do we need to calculate amount?
According to the question they only asked for difference between CI and SI.
According to the question they only asked for difference between CI and SI.
Richi said:
1 decade ago
Why in CI it is raised to 2 and not 1. => 2n= 2x(1/2) ?
Why SI calculated for yearly and not half yearly ?
Why SI calculated for yearly and not half yearly ?
Mani said:
1 decade ago
Why take rate 5 percent in compound interest formula same time you take si rate 10 percent. Please explain?
Ravi Sharma said:
7 years ago
Solve this problem using this direct formula of (diff. b/w S.I & C.I).
15000*(5/100)*(5/100) = 3 Ans.
15000*(5/100)*(5/100) = 3 Ans.
Dibyajyoti Giri said:
4 years ago
I thought the simple interest was also calculated half-yearly. In that case, SI is 122 and CI is 123.
(3)
Tamalika Roy said:
5 years ago
There's a shortcut formula.
Diff = sum(r/100)^n.
Here,
D = 1200(5/100)^2 (as half-yearly)
= Rs 3.
Diff = sum(r/100)^n.
Here,
D = 1200(5/100)^2 (as half-yearly)
= Rs 3.
(10)
Sandy said:
9 years ago
Yes @Santhiya you are upto the point. Anyhow SI gonna be the fixed interest for the months.
Naveen said:
10 years ago
To calculating S.I, considering 1 year while calculating C.I using half yearly basis. Why?
Suresh said:
1 decade ago
Rs.1200 is invest, we needed only for compound interest. So we are subtracted Rs.1200.
Haritha said:
9 years ago
Do we have any other method to solve this problem? If yes means, please tell me.
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