The sum of C.I. and S.I. on certain sum intwo years is Rs. 488 at 6% p – InterviewSolution

1.	The sum of C.I. and S.I. on certain sum intwo years is Rs. 488 at 6% per annum.Find the principal?/ किसी राशि पर 6 % की
Answer» let the principal be XSI isX×2×20/3×100=2X/15C.I isX{(1+20/3×100)²-1}X{(1+1/15)²-1}X{(16/15)²-1}X{256/225-1}X{256-225/225}X{31/225}or 31X/225sum of si & ci is===2X/15+31X/225=48830X+31X/225=48861X/225=488X=488×225/61X=1800hence the pricipal is 1800

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