In an office there were initially N employees. The HR manager first hired P% employees then after a month Q% employees left the office, the value of (P - Q) is:

Solution (By Examveda Team)

$$\eqalign{ & \frac{{\text{P}}}{{100 + {\text{P}}}} = \frac{{\text{Q}}}{{100}} \cr & {\text{or}},\,100\left( {{\text{P}} - {\text{Q}}} \right) = {\text{PQ}} \cr & {\text{or}},\,\left( {{\text{P}} - {\text{Q}}} \right) = \frac{{{\text{PQ}}}}{{100}} \cr} $$