Madhya Pradesh Police Exam Model Paper 10

Given:
Number of men = 20
Work = 180 packets
Days = 1
Formula used:
If ‘ ${\mathit{M}}_1$ ’ person can do ‘ ${\mathit{W}}_1$ ’ work in ‘ ${\mathit{D}}_1$ ’ days and ‘ ${\mathit{M}}_2$ ’ persons can do ‘ ${\mathit{W}}_2$ ’ work in ‘ ${\mathit{D}}_2$ ’ days, then
${\mathit{M}}_1{\mathit{D}}_1/{\mathit{w}}_1={\mathit{M}}_2{\mathit{D}}_2/{\mathit{w}}_2$
${\mathit{M}}_1,{\mathit{M}}_2,{\mathit{D}}_1,{\mathit{D}}_2,{\mathit{W}}_1,{\mathit{W}}_2$ are number of men, number of days and work
Calculation:
$\Rightarrow \left(20\times 1\right)/180=\left({\mathit{M}}_2\times 15\right)/135$
$\Rightarrow {\mathit{M}}_2=1$
∴ 1 man are required to pack 135 boxes in 15 days.