Question

The difference between the value of a number increased by 25% and the value of the originalnumber decreased by 30% is 22 .What is the original number ?

Answer 1

THANKS FOR THE QUESTION !

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ANS :

.......................... 40 .........................

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GIVEN :

=> THE NO. IS GIVEN AND THE DIFFERENCE
BETWEEN ITS TWO PERCENTAGES IS GIVEN :

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TO FIND :

=> THE NO.

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LET,

=> THE NO. BE :

=> 100X.

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25% OF THAT NO.

=> 25% OF 100X

=> 25 / 100 * 100X

=> 25X

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30 % OF THAT NO.

=> 30% OF 100X

=> 30 / 100 * 100X

=> 30X

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THE NO. IS INCREASED BY 25%

=> NO. + 25% OF THAT NO.

=> 100X + 25X

=> 125X

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THE NO. IS DECREASED BY 30%

=> NO. - 30% OF THAT NO.

=> 100X - 30X

=> 70X.

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ACCORDING TO THE CONDITION :

=> 125X - 70X = 22

=> 55X = 22

=> X = 22 / 55

=> X = 2 / 5

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THE NO. :

=> 100X

=> 100 * X

=> 100 * 2 / 5

=> 20 * 2

=> 40

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HOPE IT WILL HELP U ......

THANKS AGAIN .......

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