1. The interest on a certain sum of money is Rs. 22 and the true discount on the same sum for the same time and at the same rate is Rs. 20, Find the sum.





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  • By: anil on 05 May 2019 01.55 am
    Interest (I)= Rs. 22 and true discount (D)= Rs. 20 => Sum = $$frac{I imes D}{I-D}$$ = $$frac{22 imes20}{22-20}$$ = $$frac{22 imes20}{2}$$ = $$22 imes10=Rs.$$ $$220$$ => Ans - (A)
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