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:
Rs. 2.50
Rs. 3
Rs. 3.75
Rs. 4
None of these
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 2 of 6.

Naina said:   6 years ago
Because as r=10% for 1 yr so for the half year it would be 5%=5/100.

Ami said:   6 years ago
Why 5/100? Please explain that.

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.

Rohit said:   7 years ago
It is mentioned in the question SI-CI so they have just subtracted.

Name said:   7 years ago
Can anyone explain me the Last step?

Name said:   7 years ago
Can anyone explain me the Last step?

Simte said:   8 years ago
Can you give me the formulae to find out rate percent in compound interests?

Sanchali said:   8 years ago
Your answer is not clear to me, can you please explain briefly? @Nitish Reddy.

Nitish reddy said:   8 years ago
Here we are taking for only single half year so, n=1 then 2n=2*1=2.

Shruti said:   8 years ago
Why we have raised the power to 2 in calculating CI?


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