a certain job was assigned to a group of men to do in 20days.but 12men did not turn up for the job and remaining people did the job in 32days.what is the original no. of members in the group?

• 20*x=(x-12)*32
  x=32..
• 12 years agoHelpfull: Yes(25) No(4)
• Let the original members of the grp be x
  if x men wr involved den dy wud hv finished the job in 20 days. therefore it is x/20
  but 12 men did nt come and dy will tke 32 more days to complete. therefore it s (x-12)/32
  solving the eq
  x/x-12=20/32 we get
  20 as our ans.
• 12 years agoHelpfull: Yes(3) No(15)
• It is based on the concept of MAN.DAY-
  let M men work in 20 days. then, we have--> MAN*DAY=20M.(constant)
  now, 12 men did not come. So, we have remaining men=(M-12) which work for 32 days.
  Then, MAN*DAY=(M-12)*32.
  So, (M-12)*32=20M
  => M=32.
• 9 years agoHelpfull: Yes(3) No(0)
• using (man*days)/work
  let the total number of men b = x
  x*20= (x-12)*32
  x=32
• 9 years agoHelpfull: Yes(1) No(0)
• ans 20
  (x-12)20/x=32
• 9 years agoHelpfull: Yes(0) No(0)
• let x men can do in 20days.. so 1 man 1 day's work = 1/(20*x)
  so,(x-12) men 1 day work =(x-12)/(20*x) but actual work done in 1 day = 1/32
  so, (x-12)/(20*x)=1/32 ==> x=32...
• 9 years agoHelpfull: Yes(0) No(0)
• 20x=(x-12)*32
  x=32
• 9 years agoHelpfull: Yes(0) No(0)
• What is the right answer 32 or 20
• 9 years agoHelpfull: Yes(0) No(0)
• let x be the no of men in the group now, x men---20 days and (x-12) men-----32 days
  By chain rule: It is an indirect proportion i.e more men, less days
  (x-12):x::20:32 by solving this we'll get x=32 i.e initially group contains 32 men.
  Hope this helps :)
• 9 years agoHelpfull: Yes(0) No(0)
• Equate the Mandays
  let no. of men to whom work was assigned = x
  20*x=(x-12)*32
  this gives x=32 answer.
• 8 years agoHelpfull: Yes(0) No(0)
• x*20 = (x-12)*32
  12x = 384
  x = 32
• 4 years agoHelpfull: Yes(0) No(0)