The work done by a men in 3 days is equal to the work done by four

boys in 2 days. How many men are needed to do a piece of work in 48 days

which 72 boys can do in 16 days?

• work done in 3 days by 1 man
  in 1 day by (1*3)men= 3 men
  
  same work in 2 days by 4 boys
  in 1 day by (4*2)= 8 boys
  
  therefore, 3 men= 8 boys
  i.e., 72 boys= (8*9)boys= (3*9)men= 27 men
  72 boys can do a work in 16 days
  i.e., in 16 days a work is done by 27 men
  " 48 " " " " " " (27*16)/48 men= 9 men
• 12 years agoHelpfull: Yes(40) No(4)
• 3men=8 boys...
  by 1st equation
  48x=27*16
  x=9
  which is tyhe answer
• 12 years agoHelpfull: Yes(15) No(12)
• 48*x=72*16
  x=24
  
• 12 years agoHelpfull: Yes(9) No(17)
• sorry frnds i mean i want to ans the above question a mistake answ is 9
• 12 years agoHelpfull: Yes(4) No(6)
• ans is 9 men
• 12 years agoHelpfull: Yes(3) No(2)
• work done by men in 3 days = work done by 4 boys in 2 days ;
  3 M = 8 B ;
  72 boys = 8*9 boys = 3M*9= 27 M for 16 days
  for 48 days = 16*27/48= 9 ans.
  
  
• 10 years agoHelpfull: Yes(3) No(0)
• 3m=8b
  now...at place of 1 boy we need only 3/8 men so at place of 72 boys we need
  72 * 3/8 = 27 boys
• 12 years agoHelpfull: Yes(2) No(8)
• i think 3.33
• 12 years agoHelpfull: Yes(1) No(26)
• @sai...how?
• 12 years agoHelpfull: Yes(1) No(6)
• since, mtd/w = k;
  1*t1*3=4*t2*2 => t1=8t2/3 (work constant);
  now,
  m*48*t1=72*16*t2
  sub t1 in abv eqn
  we get m=9
• 11 years agoHelpfull: Yes(1) No(1)
• neha...ans is right....but plz explain it a bit..
• 12 years agoHelpfull: Yes(0) No(8)
• 1men X 3days=4boys x 2dys
  1boy=3/8men
  72 boys 1 days wrk=1/16
  72 x 3/8 men=1/16
  1men=1/432
  n x1/432=1/48
  n=9mens
• 7 years agoHelpfull: Yes(0) No(0)
• 3m=8b
  1m=8/3b
  72b can do it in 16 day we convert 72 b in the men 72 b=27 m
  That means
  27 m can do it in 16 day.now by unity method
  27 m×16=x×48
  After sol x=9
  Answer is 9 men.
• 5 years agoHelpfull: Yes(0) No(0)