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Mathematics

If (2x + 3y) : (3x + 2y) = 4 : 3; then x : y is :

  1. 6 : 1

  2. 2 : 3

  3. 1 : 6

  4. 3 : 2

Ratio Proportion

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Answer

Given,

(2x+3y):(3x+2y)=4:32x+3y3x+2y=433(2x+3y)=4(3x+2y)6x+9y=12x+8y12x6x=9y8y6x=yxy=16x:y=1:6.\Rightarrow (2x + 3y) : (3x + 2y) = 4 : 3 \\[1em] \Rightarrow \dfrac{2x + 3y}{3x + 2y} = \dfrac{4}{3} \\[1em] \Rightarrow 3(2x + 3y) = 4(3x + 2y) \\[1em] \Rightarrow 6x + 9y = 12x + 8y \\[1em] \Rightarrow 12x - 6x = 9y - 8y \\[1em] \Rightarrow 6x = y \\[1em] \Rightarrow \dfrac{x}{y} = \dfrac{1}{6} \\[1em] \Rightarrow x : y = 1 : 6.

Hence, Option 3 is the correct option.

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