Madhya Pradesh Police Exam Model Paper 9

Given:
12 men complete one-fourth of a piece of work in 10 days, working 8 hours a day.
Concept used:
Where,
M → Number of men,
D → Number of days,
H → Number of hours,
W → Work
Calculation:
⇒ D $=12\times 10\times 8\times \left(4/15\right)\times 6$
$\Rightarrow 128/3$ days
∴ 15 men would complete full piece of work in 128/3 days when they work 6 hours a day.