When 30% of one number is subtracted from another number, the second number reduces to its own four-fifth. What is the ratio between the first and the second numbers respectively?

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BANK PO Exam (Allahabad Bank) 2010 click here to view all questions

When 30% of one number is subtracted from another number, the second number reduces to its own four-fifth. What is the ratio between the first and the second numbers respectively?

A 4 : 7

B3 : 2

C2 : 5

DNone of these

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Correct answer is: None of these Explanation: let the numbers be x and y respectively. According to the question, $\Large y-\frac{x \times 30}{100}=\frac{4}{5}y$ $\implies \frac{y}{5}=\frac{3x}{10}$ $= \Large x : y = \frac{10}{3 \times 5}$ Nithin ? answered Aug 12 '2022 at 21:59 All Comments

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