"x" number of men can finish a piece of work in 30 days. If there were 6 men more, the work could be finished in 10 days less. The original number of men is

• x men do a work in 30 days
  1 man can do same work in 30x days.
  x+6 men do same work in 20 days
  1 man can do same work in 20(x+6) days.
  so, 30x = 20(x+6), so x=12 ans.
• 8 years agoHelpfull: Yes(0) No(0)