The respective ratio of the present age of Swati and Trupti is 4 : 5. Six years hence the respective ratio of their age will be 6 : 7. What is the difference between their age?

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The respective ratio of the present age of Swati and Trupti is 4 : 5. Six years hence the respective ratio of their age will be 6 : 7. What is the difference between their age?

A2 years

B3 years

C4 years

DCannot be determined

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Correct answer is: 3 years Explanation: Let Swati's present age = 4x years 'I'rupti's present age = 5x years $\frac{4x+6}{5x+6}=\frac{6}{7}$ $⟹30x+36=28x+42$ $⟹2x=42-36=6$ $⟹x=3=\text{difference of their age}$ Nithin ? answered Aug 15 '2022 at 12:3 All Comments

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