Math, asked by renusanjusonu, 6 months ago

A fraction reduces to when ¼ when 2 is subtracted from the
numerator and 3 is added to the denominator. But it reduce
to 2/3 if 6 is added to the numerator and denominator is
multiplied by 3. Find the fraction.

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Answers

Answered by Ataraxia
9

SOLUTION :-

Let,

Numerator = x

Denominator = y

According to the first condition,

\longrightarrow\sf \dfrac{x-2}{y+3}=\dfrac{1}{4}\\\\\longrightarrow 4(x-2)= y+3\\\\\longrightarrow 4x-8 = y+3\\\\\longrightarrow 4x-y = 11 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ .........................(1)

According to the second condition,

\longrightarrow\sf \dfrac{x+6}{3\times y }=\dfrac{2}{3} \\\\\longrightarrow 3(x+6) = 2\times 3y \\\\\longrightarrow 3x+18 = 6y \\\\\longrightarrow 3x-6y = - 18 \\\\\longrightarrow x-2y = -6\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ .........................(2)

Multiply equation (2) by 4,

\longrightarrow\sf 4x-8y= -24 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ .........................(3)

Equation (1) - Equation (3),

\longrightarrow \sf 7y = 35\\\\\longrightarrow\bf y = 5

Substitute the value of y in equation (2),

\longrightarrow\sf x- 2\times 5 = - 6 \\\\\longrightarrow x-10 = -6 \\\\\longrightarrow x = -6+10\\\\\longrightarrow\bf x = 4

\bf FRACTION = \dfrac{4}{5}

Answered by ItzBrainlyPrince
8

AnsWeR :-

A fraction reduces to when ¼ when 2 is subtracted from the numerator and 3 is added to the denominator. But it reduce to 2/3 if 6 is added to the numerator and denominator is multiplied by 3. Find the fraction.

The Given question is this From the Mentioned Question

GiveN :-

  • A Fraction reduces to ¼ when 2is substracted from the Numerator and 3 is added to the Denominator.

But In the Question it also States That, the second Condition of the Question.

  • But it is reduced to ⅔ when 6 is added to the Numerator and Denominator is Multiplied by 3.

To FinD :-

  • To Find the required Fraction.

SoluTioN :-

We Can Consider given two Mentioned Conditions step by step

 \boxed{ \bold{ \pink{★Case \: 1}{} }{} }{}

Let,

Numerator = x

Denominator = y

 \frac{x - 2}{y + 3}   =  \frac{1}{4}  \\  \\ 4(x - 2) = y + 3 \\  \\ 4x - 8 = y + 3 \\  \\ 4x - y = 11 -  -  - (1)

 \boxed{ \bold{ \pink{★Case \: 2}{} }{} }{}

In This case we discuss the ll Condition mentioned in the Question.

 \frac{x + 6}{3 \times y}  =  \frac{2}{3}  \\  \\ 3(x + 6) = 2 \times 3y \\  \\ 3x + 18 = 6y \\  \\ 3x - 6y =  - 18 \\  \\  =  > x - 2y =  - 6 -  -  - (2)

Now In Equation (1) - Equation (3)

7y = 35 \\  \\ y = 5

Substitute The Value of 'y' in Equation (2) we get,

x - 2 \times 5 =  - 6 \\  \\ x - 10 =  - 6 \\  \\ x =  - 6  + 10 \\  \\ x = 4

Hence We Conclude That,

 \boxed{ \bold{ \red{★FrActTiOn =  \frac{4}{5} }{} }{} }{}

Hence Prooved that the required Fraction = 4/5.

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