Question

A lent rs. 600 to b for 2 years and rs. 150 to c for 4 years and receive all together rs. 90 as both as interest . Find the rate of interest.

Answer 1

THANKS FOR THE QUESTION !

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ANS :

................. 5% ..................

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GIVEN :

=> A LENT MONEY :

TO B :

=> 600 RS

PERIOD :

=> 2 YEARS

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TO C :

=> 150 RS

PERIOD :

=> 4 YRS

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LET,

=> THE RATE OF INTEREST BE X %

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FORMULA FOR SIMPLE INTEREST :

=> P * N * R / 100

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SIMPLE INTEREST COLLECTED FROM B :

=> 600 * 2 * X / 100

=> 12X RS

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SIMPLE INTEREST COLLECTED FROM C :

=> 150 * 4 * X / 100

=> 6X RS

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BUT ,

=> WE HAVE GIVEN THE SUM OF INTEREST COLLECTED :

=> 90RS

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BY ALL THIS INFO :

=> TOTAL SIMPLE INTEREST

=> 12X RS + 6X RS = 90 RS

=> 18X RS = 90 RS

=> X = 90 RS / 18 RS

=> X = 5 %

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HOPE IT WILL HELP U ......

THANKS AGAIN......

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Answer 2

GIVEN :

=> A LENT MONEY :

TO B :

=> 600 RS

PERIOD :

=> 2 YEARS

_____________________________

TO C :

=> 150 RS

PERIOD :

=> 4 YRS

_____________________________

LET,

=> THE RATE OF INTEREST BE X %

_____________________________

FORMULA FOR SIMPLE INTEREST :

=> P * N * R / 100

_____________________________

SIMPLE INTEREST COLLECTED FROM B :

=> 600 * 2 * X / 100

=> 12X RS

_____________________________

SIMPLE INTEREST COLLECTED FROM C :

=> 150 * 4 * X / 100

=> 6X RS

_____________________________

BUT ,

=> WE HAVE GIVEN THE SUM OF INTEREST COLLECTED :

=> 90RS

______________________________

BY ALL THIS INFO :

=> TOTAL SIMPLE INTEREST

=> 12X RS + 6X RS = 90 RS

=> 18X RS = 90 RS

=> X = 90 RS / 18 RS

=> X = 5 %