Fifteen men take 10 days to complete a job working 12 hours a day. How many hours a day should 10 men work to complete the job in 20 days?
a>20 days
b>8 days
c>9 days
d>10 days

• one man's one day's work=1/15*(10*12)
  let hour is x;
  so,x=15*(10*12)/20*10=9hr
• 13 years agoHelpfull: Yes(2) No(1)
• c) 9 days
  work remains constant
  t=15*10*12/10*20
  t= 9 days
• 12 years agoHelpfull: Yes(0) No(2)