# Pls answer this Q....

Solution) Gaurav's age = x years and Saurav's age = y years

Therefore, ATQ,

$\frac{x}{y}=\frac{5}{7}\phantom{\rule{0ex}{0ex}}7x=5y\phantom{\rule{0ex}{0ex}}7x-5y=0$

Now, after 3 years,

$\frac{x+3}{y+3}=\frac{4}{5}$

5x + 15 = 4y + 12

5x - 4y = 12 - 15

5x - 4y = - 3

So, the option B is correct.

Regards!

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