Question
If the difference between C.I. and S.I. is Rs. 512 at
20% rate of interest in 3 years, then find the principal on C.I.?Solution
We have the formula, Difference = (P×R²(300+R))/100³ 512 = (P×(20)²(300+20))/((100)³) (512×100×100×100)/(20×20×320) = P P = Rs. 4000
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