Aptitude - Compound Interest - Discussion
Discussion Forum : Compound Interest - General Questions (Q.No. 2)
2.
The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is:
Answer: Option
Explanation:
Let the sum be Rs. x. Then,
| C.I. = |  |
x |  |
1 + | 4 |  |
2 | - x |  |
= | |
676 | x | - x | |
= | 51 | x. |
| 100 | 625 | 625 |
| S.I. = | |
x x 4 x 2 | |
= | 2x | . |
| 100 | 25 |
 |
51x | - | 2x | = 1 |
| 625 | 25 |
x = 625.
Discussion:
149 comments Page 3 of 15.
Siddhesh anavkar said:
5 months ago
CI for 2 year, 4%=1/25.
25 26
25 26
--- ---
625 676
When P = 625 CI = 51.
Calculating SI When P = 625, T = 2,R = 4.
SI = 50.
CI-SI =1.
Condition is satisfying;
P must be 625.
25 26
25 26
--- ---
625 676
When P = 625 CI = 51.
Calculating SI When P = 625, T = 2,R = 4.
SI = 50.
CI-SI =1.
Condition is satisfying;
P must be 625.
(3)
Divya kumari said:
11 months ago
The difference between S.I and C.I for two years is P.r^ 2/100^2.
Use this formula;
1 = p.4 * 4/100*100.
= 625 Answer.
Use this formula;
1 = p.4 * 4/100*100.
= 625 Answer.
(2)
Goutham said:
2 decades ago
Hai I am Goutham.
Can anyone help me out , why are we using -x in the step one..
Please help me out
Thanks in advance...
Can anyone help me out , why are we using -x in the step one..
Please help me out
Thanks in advance...
(1)
Name said:
1 decade ago
P x 4/100 x 4/100 = 1
P = 25*25 = 625
P = 25*25 = 625
(1)
Ankit said:
9 years ago
Solution for CI on certain amount for 2 years is 2200 and 3 years is 3640. Find the rate?
Guys please help me.
Guys please help me.
(1)
Yogesh patil said:
6 years ago
One of the simplest way to solve difference between si and ci by using simple formula
Diff=PR^2/100^2.
Diff=1*4^2/100*100.
Diff=1/625.
Ans=625.
Diff=PR^2/100^2.
Diff=1*4^2/100*100.
Diff=1/625.
Ans=625.
(1)
Verma said:
5 years ago
Use this to get the answer.
Sum = X(100/r)^2.
where X = C.I - S.I.
Sum = X(100/r)^2.
where X = C.I - S.I.
(1)
Xyz said:
2 decades ago
CI = interest- sum............
observe problem 1 . CI= 3321-3200
observe problem 1 . CI= 3321-3200
Gutti said:
2 decades ago
You have any shortcut method to this.
Priyanka P. said:
1 decade ago
Its p*(x/100)^2 = ans.
p=amount
x=rate
p=amount
x=rate
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