Question

Which is the number when $40$ is subtracted gives one-third of the original number?

Answer 1

Let the number be $x$.

As per question, we have

$x-40=\frac{1}{3}x$

Mu;tiply $3$ on both the sides,

$3(x-40)=x$

$\Rightarrow 3x-120=x$

$\Rightarrow 2x=120$

$\Rightarrow x=60$

So, the original number is $60$.