4 men can finish work in 12 days.6 boys do the same in 10 days,in how much days 3 men and 3 boys finish the job twice as large

• 1 man's 1 day's work : 1/48
  similarly 1 boy's 1 day's work : 1/60
  3 men n 3 boys 1 day's work : 3/60 + 3/48 = 9/80
  
  hence time taken to complete twice of that work: 2* 80/9 = 160/9 = 17 7/9 days to complete twice of work :)
• 11 years agoHelpfull: Yes(15) No(0)
• 18 days. Because 1 men per day do the work 1 1/4 . and a boy do 1 work . so 3 men and 3 boys do 6.75 work perday. so totally 120 work done by 18 days
• 11 years agoHelpfull: Yes(0) No(0)
• @pallavi ur ans is ryt..! mail me some questions.
• 11 years agoHelpfull: Yes(0) No(2)
• 4 mens 1 day work=1/12;
  so 1 mens one day work=1/48
  same way , 1 boys 1 day work=1/20
  
  for (3 boy's + 3 men's) 1 day work= 9/80
  (3 boys + 3 mens )will complete work in = 80/9 =>9 days
  as work is twice large now ,so they will take 18 days..
  
  
• 11 years agoHelpfull: Yes(0) No(0)