The difference between si and ci of a certain sum of money is rs 48 at 20% per annum for two year find the principle 

Asked by NIRAJ | 4th Jan, 2018, 04:15: PM

Expert Answer:

begin mathsize 16px style straight C. straight I. equals straight P open square brackets open parentheses 1 plus straight r over 100 close parentheses to the power of straight n minus 1 close square brackets equals straight P open square brackets open parentheses 1 plus 20 over 100 close parentheses squared minus 1 close square brackets equals straight P open square brackets open parentheses 6 over 5 close parentheses squared minus 1 close square brackets equals straight P open square brackets fraction numerator 36 minus 25 over denominator 25 end fraction close square brackets equals fraction numerator 11 straight P over denominator 25 end fraction
straight S. straight I. equals fraction numerator straight P cross times 20 cross times 2 over denominator 100 end fraction equals fraction numerator 2 straight P over denominator 5 end fraction
Given comma
straight C. straight I. negative straight S. straight I. equals Rs. space 48
rightwards double arrow fraction numerator 11 straight P over denominator 25 end fraction minus fraction numerator 2 straight P over denominator 5 end fraction equals 48
rightwards double arrow fraction numerator 11 straight P minus 10 straight P over denominator 25 end fraction equals 48
rightwards double arrow straight P equals 25 cross times 48
rightwards double arrow straight P equals Rs. space 1200 end style

Answered by Rashmi Khot | 5th Jan, 2018, 09:57: AM