A man, a woman and a boy can complete a job in 3,4 and 12 days respectively. How many boys must assist 1 man and 1 woman to complete the job in ¼ of a day?
(a). 1 (b). 4 (c). 19 (d). 41

• (1 man + 1 woman)'s 1 days work = 1/3+1/4=7/12
  Work done by 1 man and 1 women n 1/4 day=((7/12)*(1/4))=7/48
  Remaining work= 1- 7/48= 41/48
  Work done by 1 boy in ¼ day= ((1/12)*(1/4)) =1/48
  Therefore, Number of boys required= ((41/48)*48)= 41
  So ans is (d)
• 11 years agoHelpfull: Yes(7) No(1)
• Option D
  Explanation:
  (1 man + 1 woman)'s 1 day work = (1/3 + 1/4) = 7/12 Work done by 1 man and 1 woman in 1/4 day = (7/12 * 1/4) = 7/48
  Remaining work = (1 - 7/48) = 41/48
  Work done by 1 boy in 1/4 day = ( 1/12 * 1/4) = 1/48
  Number of boys required = 41/48 * 41 = 41.
• 7 years agoHelpfull: Yes(0) No(1)