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:
174 comments Page 8 of 18.
Venkatesh kumar said:
1 decade ago
Thanks Gayathti for giving detailed explanation.
Saurabh said:
1 decade ago
Thanks gayathri.
Tejashree said:
1 decade ago
Thanks gayathri
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.
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