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Aptitude - Simple Interest - Discussion

Discussion Forum : Simple Interest - General Questions (Q.No. 3)
Simple Interest
3.
A sum fetched a total simple interest of Rs. 4016.25 at the rate of 9 p.c.p.a. in 5 years. What is the sum?
Rs. 4462.50
Rs. 8032.50
Rs. 8900
Rs. 8925
None of these
Answer: Option
Explanation:
Principal
= Rs. 100 x 4016.25
9 x 5
= Rs. 401625
45
= Rs. 8925.
Discussion:
61 comments Page 5 of 7.
Mani said:   1 decade ago
Refer important formulas in S.I @ bhaskar
Muali said:   1 decade ago
S.I = P*R*T /100.
Mudassir pasha said:   1 decade ago
We can solve this problem logically also without using SI formula.

Here the the total interest amt given for 5 years is 4016.25.

Therefore for the total interest for 1 year is 4016.25/5 = 803.25.

Therefore 803.25 is the 9% of the total sum.

If we calculate the 100% of the 803.25 we will get the the total amt.

To calculate 100%, multiple 803.25 by 100 and divide it by 9.

803.25*100/9 = 8925.
Kruba karan said:   1 decade ago
What is another way to solve this problem?
Fortune said:   1 decade ago
Hey I am not able to divide 401625/45 it is easy with calculate but manually I'm not able please help me and make it easy for me step by step.
Vipin Mishra said:   1 decade ago
First take a LCM of 401625 Then you can calculation easily.
Dipak said:   1 decade ago
Which formula to use?
Chinna said:   1 decade ago
It is very simple.

Just multiply rate of interest and time.

i.e, 9x5 = 45%.

Here 45% = 4016.25 then.

100% = ?

Hence 100% = 401625/45 = 8925.

Thank you.
Thies said:   1 decade ago
What about the interest on interest?
Lahari said:   1 decade ago
How to represent the time? For eg: If 2 years and 8 months like that given.
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