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:
175 comments Page 11 of 18.
Surjeet said:
9 years ago
Because we calculate with 3 years that is why we subtract from 815.
Anusha said:
9 years ago
Very helpful to understand the solution. Thanks for all your explanation.
Manya said:
9 years ago
Thanks a lot @Gayatri.
Nirmala said:
9 years ago
Why we are not substructing 854? Please explain.
Pradeep said:
9 years ago
Let 1 yr int .....x.
3yr int.......3x.
4yr int........4x.
(P+4x) - (P+3x) = 854 - 815,
x = 39.
3yr int.......3x.
4yr int........4x.
(P+4x) - (P+3x) = 854 - 815,
x = 39.
Suraj.D said:
9 years ago
Please tell me if we subtract 854- 815 we get principal+ s.I for 1 year. Then can we consider it only s.I for 1 year? Please explain me.
Deepti said:
9 years ago
It is given in sum that SI of 3yrs is 815 so why we need to multiply 3 with 39 to get SI for 3 years?
Sachin said:
9 years ago
Thanks for all the solution and explanation.
Jitendra said:
9 years ago
@Gayathri.
Very good explanation, easily understand. Thanks.
Very good explanation, easily understand. Thanks.
Chikuuuu said:
9 years ago
Your explanation helped me a lot, Thanks @Gayathri.
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