if 5 men take an hour to dig a ditch, then how long should 12 men take a dig to ditch of the same type?

25 min
30 min
28 min
20 min

• 25 min
  if 5 men take an hour to dig a ditch, then
  12 men will take 5*60/12 = 25 mins to dig a ditch of the same type.
• 11 years agoHelpfull: Yes(27) No(1)
• 25 minutes
  Formula used= (man*day*hour)/work=(man*day*hour)/work as work is same so
  5*60=12*time =>time=25 min
• 11 years agoHelpfull: Yes(11) No(0)
• M1H1=M2H2
  5*60=12*H2
  H2=25 min ;
• 9 years agoHelpfull: Yes(7) No(1)
• by chain rule
  12:5::60:x
  12x=5*60
  x=25 min
• 10 years agoHelpfull: Yes(3) No(0)
• work done by one men for one min = (1/60*5)
  12 men can do in one min = 1/25
  so 12 men will take 25 min to complete
• 10 years agoHelpfull: Yes(3) No(1)
• 25 min
  if 5 men take an hour to dig a ditch, then
  12 men will take 5*60/12 = 25 mins to dig a ditch
• 11 years agoHelpfull: Yes(2) No(0)
• 5 ----------------- 1hr =60mins
  12 men ----------5*60/12 = 25 mins...
• 9 years agoHelpfull: Yes(2) No(0)
• 5 men=1 hr =60 min
  1 man=5*60 min
  so 12 men=5*60/12=25 min ans
• 9 years agoHelpfull: Yes(2) No(0)
• 25 mins 5men = 1 hr ,1 men -5*1=5 hrs
  12 men-5/12*60=25 mins
• 9 years agoHelpfull: Yes(0) No(0)
• 25 days
  5m=1h
  1m=5x60min
  12m =300/12
  =25
  
• 8 years agoHelpfull: Yes(0) No(0)
• 5 men-1hr(60 min)
  12men -?((5*60)/12)=25min
• 8 years agoHelpfull: Yes(0) No(0)
• 5 men takes 60 minutes.
  1 man takes 60*5=300 minutes.
  therefore,
  12 men takes 300/12=25 minutes.
• 8 years agoHelpfull: Yes(0) No(0)
• 25 minute
  5*60min=300
  300/12=25min
• 8 years agoHelpfull: Yes(0) No(0)
• 25minz
  1 hour=60min
  5*60=12*x
  x=5*60/12
  x=25minz
  
• 8 years agoHelpfull: Yes(0) No(0)
• 5*60=300 menminutes( it is for 1 men to dig a ditch)
  300/12=25 minutes (it is for twelve mens to dig a ditch)
  answer is 25 minutes...
  
  
• 8 years agoHelpfull: Yes(0) No(0)
• 60*5/12=25
• 6 years agoHelpfull: Yes(0) No(1)