A, B and C can independently complete a piece of work in 8,12 and 6 days respectively. A and B work together for 4 days and leave. How long will C take to finish the remaining work?

• A and B work together for 4 days and completed 4*(1/8 +1/12) =5/6 work.
  Balance 1/6 work will be completed by C in one day.
• 12 years agoHelpfull: Yes(2) No(0)
• A can do a work in 8 days. A's 1 day work =1/8
  B can do a work in 12 days. B's 1 day work =1/12
  C can do a work in 6 days. C's 1 day work =1/6
  Both A and B's 1 day work = 1/8+1/12 = 5/24
  4 days work in both A and B = (5/24)*4 = 5/6
  Remaining part of work = 1-(5/6)=1/6.
  C can do a 1 part of work is 6days.
  C can do (1/6)part of work = (1/6)*6 = 1 day.
  so C can finish the remaining work in 1 day.
  
• 12 years agoHelpfull: Yes(1) No(1)