Arithmeticmedium · Past Paper
The simple interest on a sum of money is 4/9 of the principal. If the number of years is equal to the rate percent per annum, find the rate.
A5%
B6.67%
C10%
D20/3 %
✓ Correct Answer: D — 20/3 %
I = 4/9 P, T = R. 4/9 P = (P*R*R)/100 => R^2 = 400/9 => R = 20/3%.
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