Question

The salary of a person was increased by 15% if we has salary now is 9936 initial salary.

Answer 1

Let initial salary be x.
x+(15/100)x=9936.
X(115/100)=9936.
x=(100/115)*9936.
x=8640

Answer 2

$\huge\purple{\fbox{\fbox{\red{\mathcal{Bonjour}}}}}$

let the initial salary be X

$x + 15\% \: of \: x = 9936$

$= > \frac{x}{1} \times \frac{100}{100} + \frac{15}{100} \times x = 9936$

$= > \frac{100x + 15x}{100} = 9936$

$= > \frac{115x}{100} = 9936$

$= > x = 9936 \times \frac{100}{115}$

$= > x = 9936 \times \frac{20}{23}$

$= > x = 432 \times 20$

$= > x = 8640(ans)$