x-3 men can do a piece of work in x days and x+5 men can do 40% of the same work in x-7 days then in how many days can x+5 men finish the work?

• ans:7.5
  for exmple: let x=10
  7 10 100
  15 3 40
  15 7.5 100
  
• 9 years agoHelpfull: Yes(1) No(2)
• for exmple: let x=10
  7 10 100
  15 3 40
  15 7.5 100
  ans=7.5
• 7 years agoHelpfull: Yes(0) No(1)