Question

A sum of money becomes rs.8352 in 2 years and rs.8928 in 3 years .find the principal and rate of interest. please help me i will became brainlist.

Answer 1

THANKS FOR THE QUESTION !

______________________________

GIVEN :

=> SUM OF MONEY :

=> IN 2 YRS :

=> 8352 RS

_______________________________

SUM OF MONEY :

=> IN 3 YRS :

=> 8928 RS

_______________________________

TO FIND :

=> PRINCIPAL

&

=> RATE OF INTEREST

_______________________________

THE SUM OF MONEY IN 1 YR :

=> SUM OF MONEY IN 3 YRS - SUM OF MONEY IN 2 YRS

=> 8928 RS - 8352 RS

=> 576 RS

_______________________________

FORMULA FOR SIMPLE INTEREST :

=> PRINCIPAL * RATE OF INTEREST * TIME / 100

=> PRINCIPAL * RATE OF INTEREST * 1 / 100

=> PRINCIPAL * RATE OF INTEREST / 100

_______________________________

BUT INTEREST IS GIVEN :

=> RS 576

_______________________________

576 = P * R / 100

=> 57,600 = P * R

_______________________________

TO FIND :

=> PRINCIPAL

_______________________________

INTEREST FOR 2 YRS :

=> P * N * R / 100

=> P * R * 2 / 100

=> P * R / 50

_______________________________

BUT ,

=> P * R = 57,600

_______________________________

INTEREST FOR 2 YRS :

=> P * R / 50

=> 57,600 / 50

=> 1,152

_______________________________

PRINCIPAL :

=> SUM OF MONEY FOR 2 YRS - INTEREST FOR 2 YRS

=> 8,352 RS - 1,152 RS

=> 7,200 RS

_______________________________

TO FIND :

=> RATE OF INTEREST

_______________________________

P * R = 57,600

=> 7,200 RS * R = 57,600

=> R = 57,600 / 7200

=> R = 8%

_______________________________

SO,

PRINCIPAL :

=> 7,200 RS

RATE OF INTEREST :

=> 8%

_______________________________

HOPE IT WILL HELP U .......

THANKS AGAIN......

_______________________________