RRB Assistant Loco Pilot and Technician Model Paper 6 with solutions

. Let the number of people be x.
As per the given condition,
$\frac{72}{\mathit{x}-3}$ - $\frac{72}{\mathit{x}}$ = 4
⇒ $\frac{72\left[\mathit{x}-\mathit{x}+3\right]}{\mathit{x}\left(\mathit{x}-3\right)}=4$
⇒ $4({\mathit{x}}^2$ - 3 x ) = 72 × 3
⇒ ${\mathit{x}}^2-3\mathit{x}-54=0$
⇒ x(x - 9) + 6(x - 9) = 0
Either x + 6 = 0 or x – 9 = 0
x = –6 (not possible) x = 9