Question

The numerator and denominator of a rational are in the ratio $3:4$. If the denominator is irrational by $3$, the ratio $3:5$. Find the rational number.

Answer 1

Product of $n$ positive No. is $\perp$ then their sum is $+ve$ integers because if product of $n+ve$ No. is I that. Some of them are fractions and some of then are Nos.

$\frac{a}{b}=\frac{3}{4}$

$a=\frac{3}{4}b$

$a=3\times 3$

$a=9$

$\frac{a}{b+3}=\frac{3}{5}$

$5a=3b+9$

$\frac{15b}{4}=3b+9$

$\frac{3b}{4}=9$

$b=12$