A can have a piece of work done in 12 days, B can work three times faster than the A, C can work five times faster than A. How many days will they take to do the work together ? [A] 2 [B] 3 [C] 4/3 [D] 5/3

• Ans. C).4/3
• 5 years agoHelpfull: Yes(1) No(0)
• a=1/12
  b=3/12
  c=5/12
  a+b+c=1/12+3/12+5/12=3/4
  reciprocal in order to get the days
  4/3
• 4 years agoHelpfull: Yes(0) No(0)