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 Compound Interest :-
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 IMPORTANT EXAMPLES
 ::Important Formulas ::Important Examples .
 Here Some Basic Formulas/Rules Are given below :- Let Principal = P, Rate= R% per annum, Time = n years. When interest is compounded Annually : Amount = P (1 + R/100 )n When interest is compounded Half-yearly : Amount = P (1 + R/2 /100 )2n When interest is compounded Quarterly : Amount = P (1 + R/4 /100 )4n When interest is compounded Annually but time is in fraction, say 3 2/5 : Amount = P (1 + R/100 )3 X (1 + (2/5 R)/100 ) When Rates are different for different years, say R1%, R2%, R3% for lst, 2nd and 3rd year respectively. Then, Amount = P (1 + R1/100 ) (1 + R2/100 ) (1 + R3/100 ) Present worth of Rs.x due n years hence is given by : Present Worth =        x                                      (1 + R/100 )n Click Here for Important Examples