Question

If $\frac{0.3+0.7x}{x}=0.85$, find $x$?

Answer 1

Given equation is $\frac{0.3+0.7x}{x}=0.85$

Transposing $x$ from the denominator on the LHS to the RHS, we get:

$0.3+0.7x=0.85x$

$\Rightarrow 0.85x-0.7x=0.3$

$\Rightarrow 0.15x=0.3$

$\Rightarrow x=\frac{0.3}{0.15}$

$=2$

Hence, the value of $x$ is $2$.