Aptitude - Simple Interest - Discussion

Discussion Forum : Simple Interest - General Questions (Q.No. 3)
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 1 of 7.

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.

Bhavna said:   1 decade ago
@Fortune.

We know that P = S.I*100/R*T.

Given S.I = 4016.25, R = 9, T = 5.

Substitute these values in above formula,

Then,

P = 4016.25*100/9*5.

P = 4016.25*20/9 (Cancel 100 with 5).

P = 80325/9.

By simplifying this we get.

P = Rs.8925.

Hope it is understandable.

Manju said:   9 years ago
If you go through the important formulas you will definitely find formulas to find each value differently.

Here sum relates to the principle so the formula for principle is P=100 * SI / R * N.

SUBSTITUTE the values in it, you will get the solution, that's it.

Vinaya said:   8 years ago
Hi friends! I am Vinaya.

Here we have to find d sum(p).
So formula we know is S.I=P*R*T/100;.
SO, p=S.I*100/R*T--->given S.I=4016.25 we can write it as 401625/100...R=9,T=5.
Substitute the values ...P=401625*100/100*9*5..

After calculation, we get 8925.

Faustina paradise said:   8 years ago
We can also use the formula.

Simple interest =principal *rate *time all over 100.
4016.25=p*9*5/100,
4016.25=45p/100,
Then cross multiply;
45p=401625,
divid both side by 45.
p=8925.
There the sum = 8925.

Shathur Vikash said:   5 years ago
They've asked the sum for that interest amount.

So,
Let's 5 years interest is 4016.25.
Then 4016.25 / 5 = 803.25.
Now, 803.25 is 9% interest for a year,
Then 803.25 * 100/9 = 8925.
(10)

Parkash jha said:   8 years ago
5 years = 4016.25.
So, 1 years = 803.25.

Now formula, Rate % = Interest/principalx100(only for 1 years).
So, principal=803.25/9x100=8925.

Hence principal = 8925 ans=(C).
(1)

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.

Samridhi said:   2 years ago
Interest (I) = Rs. 4016.25.
Rate (R) = 9 pcpa.
Time (T) =5 years.
Principal (P)=?

I = (P×R×T)/100.
P= (I×100)/ R×T.

P= (4016.25×100)/ (9×5).
P= Rs 8925.
(64)

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.


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