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Question

The denominator of a fraction is greater than its numerator by 11.If 8 is added to both its numerator and denominator,it becomes 34.Find the fraction.

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Solution

Given: The denominator of a fraction is greater than its numerator by 11. If 8 is added to both its numerator & denominator, it becomes 3/4.

To find : the fraction.

Let x be the numerator and y be the denominator.
Hence the fraction is xy

Now acccording to the question,
The denominator of a fraction is greater than its numerator by 11.
y = x + 11 ......... (1)

If 8 is added to both its numerator & denominator, it becomes 3/4.
x+8y+8 =34

4(x+8) = 3 (y +8)

4x +32 = 3y + 24

4x - 3y = -32 +24


4x - 3y = -8 ......... (2)

Now substituting y from eq (1) to eq (2) , we get

4x -3 ( x+ 11) = -8

4x -3x-33 = -8

x = -8 +33

x = 25
now
y= x+ 11
y = 25+11 = 36
Therefore the fraction which is =xy = 2536

The required fraction is 2536


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