The difference b/w the compound interest payble half yearly and the simple interest on a certain sum...
The difference b/w the compound interest payble half yearly and the simple interest on a certain sum lent out at 10% p.a for 1 year is Rs 25. What is the sum?
Answer/Solution
Rs. 10000
Steps/Work
in simple words S.I= PTR/100=(P*1*10)/100 P/10
HERE AMOUNT A= p+ S.I= P+ P/10=11P/10....
NOW FOR COMPOUND INTEREST WHEN CALCULATED HALF YEARLY AMOUNT=P[1+R/200]^2T=P[1+10/200]^2*1=441P/400
here its given in the question dat diff btwn simple interest and compound interest half yearly ... is 25
=> 441p/400-11p/10= 25 =>p/400=25 =>p= 400*25=10000 so sum = 10000
ANSWER:C
HERE AMOUNT A= p+ S.I= P+ P/10=11P/10....
NOW FOR COMPOUND INTEREST WHEN CALCULATED HALF YEARLY AMOUNT=P[1+R/200]^2T=P[1+10/200]^2*1=441P/400
here its given in the question dat diff btwn simple interest and compound interest half yearly ... is 25
=> 441p/400-11p/10= 25 =>p/400=25 =>p= 400*25=10000 so sum = 10000
ANSWER:C