20 men can do a job in 10 days, working 8 hours a day, If women are 33.33% more efficient than men, how many woman will it take to finish the same job in 10 days. Working 6 hours a day ?
Op 1: 10
Op 2: 12
Op 3: 15
Op 4: 20

• Option 4) 20
  
  Total men hours of work = 20 x 10 x 8 = 1600
  So 1 man, 1 hr work = 1/1600
  As woman is 33.33% more efficient, so 1 woman, 1 hr work=(133.33/100) x (1/1600)=1.3333/1600
  So 10 days work of 1 woman working 6 hrs =10 x 6 x (1.3333/1600) = 1/20
  Hence 20 women are required.
  
  Alternate Method:
  (M x D1 x H1) = (W x D2 x H2)
  Here W=1.3333M = (4/3)M
  => (20 x 10 x 8) = (W x 10 x 6) x (4/3)
  => W = 20
• 7 years agoHelpfull: Yes(9) No(0)
• (M x D1 x H1) = (W x D2 x H2)
  Here W=1.3333M = (4/3)M
  => (20 x 10 x 8) = (W x 10 x 6) x (4/3)
  => W = 20
• 7 years agoHelpfull: Yes(7) No(0)
• (M x D1 x H1) = (W x D2 x H2)
  Here W=1.3333M = (4/3)M
  => (20 x 10 x 8) = (W x 10 x 6) x (4/3)
  => W = 20
• 6 years agoHelpfull: Yes(1) No(0)
• (M x D1 x H1) = (W x D2 x H2)
  Here W=1.3333M = (4/3)M
  => (20 x 10 x 8) = (W x 10 x 6) x (4/3)
  => W = 20
• 4 years agoHelpfull: Yes(0) No(0)