Aptitude - Simple Interest - Discussion
Discussion Forum : Simple Interest - General Questions (Q.No. 6)
6.
A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?
Answer: Option
Explanation:
S.I. = Rs. (15500 - 12500) = Rs. 3000.
| Rate = |  |
100 x 3000 |  % |
= 6% |
| 12500 x 4 |
Video Explanation: https://youtu.be/SIcQu1HOmOk
Discussion:
51 comments Page 2 of 6.
Ayush said:
7 years ago
Amount Rs.15,500.
The sum Rs.15,500.
Amount = 15,500 it means S.I is 3000 (i.e S.I = Amount - Sum = 15,500 - 12,500=3,000)
3000 is 24% of 12,500 (because 12,500 // 1% = 125 // 3,000/125=24% ).
But 24% is for 4 year.
So we divide 24%/4 and got rate 6% p.a.
The sum Rs.15,500.
Amount = 15,500 it means S.I is 3000 (i.e S.I = Amount - Sum = 15,500 - 12,500=3,000)
3000 is 24% of 12,500 (because 12,500 // 1% = 125 // 3,000/125=24% ).
But 24% is for 4 year.
So we divide 24%/4 and got rate 6% p.a.
(1)
Madhi said:
7 years ago
How we are taking time =4yrs?
Joy Kenny said:
7 years ago
The formula to calculate simple interest is P x R x T / 100.
So, Interest here is 15,500 - 12,500 = 3000.
The principal is 12,500,
Time is 4 years.
Now to calculate the rate of interest use this formula,
3000 = 12500 x r x 4 / 100,
300000 = 50000r,
r = 300000/50000,
r = 6 %.
So, Interest here is 15,500 - 12,500 = 3000.
The principal is 12,500,
Time is 4 years.
Now to calculate the rate of interest use this formula,
3000 = 12500 x r x 4 / 100,
300000 = 50000r,
r = 300000/50000,
r = 6 %.
Dineshpalani said:
7 years ago
Please explain this problem.
Priya said:
8 years ago
Why we are taking as 12, 500 instead of 15,000. We are taking the number of the year (t) is 4. So we want tot take 15,500 am I right?
SammaniS said:
8 years ago
I don't understand. Why we didn't divide 3,000 by 4 (as it is given that the principal increased in 4 years) to get the actual S.I, that is for a single year?
Kshiroda said:
8 years ago
To get simple interest we have to multiply principal *rate*time/100.
Diptiranjan said:
8 years ago
It is like:
15500-12500 = 3000,
1% of Principal = 125,
3000/125=24% for 4 years.
For 1 year = 24/4 = 6%.
15500-12500 = 3000,
1% of Principal = 125,
3000/125=24% for 4 years.
For 1 year = 24/4 = 6%.
V.N.Hari said:
9 years ago
To get simple interest from total money after four years (complete period) we need to subtract 12500 from total money.
Salimjoy said:
9 years ago
What means PTR and SI?
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