simple interest problems and solutions - Wikitechy https://www.wikitechy.com/interview-questions/tag/simple-interest-problems-and-solutions/ Interview Questions Mon, 06 Sep 2021 05:38:38 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png simple interest problems and solutions - Wikitechy https://www.wikitechy.com/interview-questions/tag/simple-interest-problems-and-solutions/ 32 32 If the simple interest on a certain sum of money is 4/25 of the sum and the rate percent equals the number years, then the rate of interest per annum is ? https://www.wikitechy.com/interview-questions/simple-interest/if-the-simple-interest-on-a-certain-sum-of-money-is-4-25-of-the-sum-and-the-rate-percent-equals-the-number-years-then-the-rate-of-interest-per-annum-is/ https://www.wikitechy.com/interview-questions/simple-interest/if-the-simple-interest-on-a-certain-sum-of-money-is-4-25-of-the-sum-and-the-rate-percent-equals-the-number-years-then-the-rate-of-interest-per-annum-is/#respond Wed, 18 Aug 2021 02:28:06 +0000 https://www.wikitechy.com/interview-questions/?p=2063

If the simple interest on a certain sum of money is 4/25 of the sum and the rate percent equals the number years, then the rate of interest per annum is ?

A. 4 %

B. 5 %

C. 8 %

D. 10 %

Answer : A. 4 %…

Explanation :

Let the principal be Rs.x, then the simple interest (I) = (4 / 25 )x.
The rate of interest per annum be r% then time (T) = r years
R = ( 100 * I ) / ( P * T )
r = ( 100 * ( 4/25 ) x ) / ( x * r )
r2 = 400 / 25
r = 20 / 5
= 4 %

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