If 10 men can complete a piece of work in 12 days by working 7 hours a day, then in how many days can 14 mendo the same work by working 6 hours a day?

10

Formula to be used here,

${ M}_{1 }$ x ${ D}_{1 }$ x ${ H}_{1 }$  = ${ M}_{2 }$ x ${ D}_{2 }$ x ${ H}_{2 }$

⇒ where, M = No. of men, D = no of days, H = No. of Hours,

⇒ Putting in the values,

⇒ 10 x 12 x 7 = 14 x  ${ D}_{2 }$ x 6

⇒ ${ D}_{2 }$ = 10 days.