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If 20% of X = 30% of Y, then X : Y = ?

A3 : 2

B2 : 3

C1 : 2

D2 : 1

Answer:

A. 3 : 2

Read Explanation:

Given:


20% of X = 30% of Y

Calculation:


(20100)×X=(30100)×Y(\frac{20}{100})\times{X}=(\frac{30}{100})\times{Y}


(15)×X=(310)×Y(\frac{1}{5})\times{X}=(\frac{3}{10})\times{Y}


XY=(5×3)10\frac{X}{Y}=\frac{(5\times{3})}{10}


XY=1510\frac{X}{Y}=\frac{15}{10}


XY=32\frac{X}{Y}=\frac{3}{2}


⇒ X : Y = 3 : 2


∴ The ratio between X and Y is 3 : 2.


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