Question

What number should be added to the terms of $49:68$ to get the ratio $3:4$?

Answer 1

If we add $8$ to the numbers $49$ and $68$ the numbers will became $57$ and $76$.

$\Rightarrow 57:76=\frac{57}{76}=\frac{3\times 19}{4\times 9}=\frac{3}{4}=3:4$