Aptitude - Simple Interest - Discussion

Discussion Forum : Simple Interest - General Questions (Q.No. 11)
11.
A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is:
5%
8%
12%
15%
Answer: Option
Explanation:

S.I. for 3 years = Rs. (12005 - 9800) = Rs. 2205.

S.I. for 5 years = Rs. 2205 x 5 = Rs. 3675
3

Principal = Rs. (9800 - 3675) = Rs. 6125.

Hence, rate = 100 x 3675 % = 12%
6125 x 5

Video Explanation: https://youtu.be/UYwiBCRN39s

Discussion:
68 comments Page 6 of 7.

Ramakhil said:   7 years ago
Can any explain why to take 5 years and not 8 years?
(2)

Ruku said:   1 decade ago
Thanks madhan, I understand it, thanks lot.

Acd said:   1 decade ago
Principal = Rs. (9800 - 3675) = Rs. 6125 ?

Gayatri said:   9 years ago
Not getting this, please explain this sum.

Sabu said:   7 years ago
The discussion is very helpful. Thanks.

Vipul said:   6 years ago
2205=9800*3*R/100.

Is this is correct?

Ayaz said:   6 years ago
@Pramit shome.

Would you explain how?

Deepak Soni said:   8 years ago
At last,

si=(735*100)/6125,
Si=12%.

Sanjeev verma said:   9 years ago
How to solve this after getting SI?

Amani said:   1 decade ago
Why we calculate rate for 5 years?


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