. If 18 men can build a wall 140 mtrs. In 42 days . In how many days can 15 men be able to construct a similar wall 100 mtrs . long??

• 18 men---140 meter wall--42 days..
  according to unitary method, 1 men--140 meter--(42*18) days
  i men --1 meter --(42*18)/140 days
  15 men--1 meter--(42*18)/(140*15)days
  15 men--100 meter-- (42*18*100)/(140*15) days=36 days(ans)
  
• 11 years agoHelpfull: Yes(3) No(2)
• 1=> men=18,work=140mtrs,days=42
  2=> men=15,work=100mtrs,days=x ,then
  (m1*d1)/w1=(m2*d2)/w2
  =>(18*42)/140=(15*x)/100
  =>x=36
• 11 years agoHelpfull: Yes(2) No(2)
• M1=18, D1=42, W1=140, M2=15, W2=100, D2=?
  (M1*D1/W1)=(M2*D2/W2)
  18*42/140=15*D2/100
  D2=18*42*100/15*140=36 DAYS
  
• 11 years agoHelpfull: Yes(1) No(1)