Aptitude - Simple Interest - Discussion
Discussion Forum : Simple Interest - General Questions (Q.No. 1)
1.
A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
Answer: Option
Explanation:
S.I. for 1 year = Rs. (854 - 815) = Rs. 39.
S.I. for 3 years = Rs.(39 x 3) = Rs. 117.
Principal = Rs. (815 - 117) = Rs. 698.
Discussion:
171 comments Page 4 of 18.
Radhika said:
1 decade ago
Thank you so much Gayathri.... very good explaination
Moksh said:
1 decade ago
@Gayathri.
Thanks a lot dear.
Very useful answer :).
Thanks a lot dear.
Very useful answer :).
Ismail khan said:
1 decade ago
Amount for three years is 815
so AMOUNT= p + SI
A = p + pin
815= p + 3pi.......... (1)
similerly for 4 years
854 = p +4pi..........(2)
subtracting equation (1) from(2) we get
39 = pi
or
pi =39
put this value of pi in equation (1) we get
815= p+ 3*39
815= p+ 117
815-117=p
p=698
so AMOUNT= p + SI
A = p + pin
815= p + 3pi.......... (1)
similerly for 4 years
854 = p +4pi..........(2)
subtracting equation (1) from(2) we get
39 = pi
or
pi =39
put this value of pi in equation (1) we get
815= p+ 3*39
815= p+ 117
815-117=p
p=698
Satish said:
1 decade ago
@Gayahthri explained good .
Sudesna said:
1 decade ago
When we apply the formula SI = PRT/100.
And when we apply the formula Amount = P+SI.
And when we apply the formula Amount = P+SI.
Sumit Singh said:
1 decade ago
815 ------ 854 (This value 39 increase in 1 year ).
So in four year 39*4/156.
This 156 is interest in four year.
So principle is equal to / 854-156 equal to 698.
So in four year 39*4/156.
This 156 is interest in four year.
So principle is equal to / 854-156 equal to 698.
VarunRaj said:
1 decade ago
If we take for four years.
39*4 = 156.
854-156 = 698 is the answer.
If we take three years.
39*3 = 117.
815-117 = 698 the answer is same !
We can do both the way.
39*4 = 156.
854-156 = 698 is the answer.
If we take three years.
39*3 = 117.
815-117 = 698 the answer is same !
We can do both the way.
Ravi said:
1 decade ago
If in this question asked rate also then how to solve this question?
Nishan said:
1 decade ago
In my view the interest between the 3rd & 4th year of Rs. 39/- cannot determine the same interest component for the first three years as the interest will be paid on top of the capital?
As such the interest component should reduce proportionately over the previous years?
As such the interest component should reduce proportionately over the previous years?
NARENDRA said:
1 decade ago
SI1 = 815.
SI2 = 854.
DIFFERENCE = SI2-SI1.
D = 854-815.
D = 39.
FOR 3 YEARS = 3*39.
= 117.
SO NOW P = 815-117.
P = 698.
SI2 = 854.
DIFFERENCE = SI2-SI1.
D = 854-815.
D = 39.
FOR 3 YEARS = 3*39.
= 117.
SO NOW P = 815-117.
P = 698.
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