A,B,C are three book printing machines. A takes 8 mins, B takes 12mins and C takes 10mins to print a book. if they work each day for 12 hours.what is the no. of books they print on each day?

• a,b,c work in a min=1/8+1/12+1/10=37/120
  12 hrs= 12*60 =720 min
  
  number of book printed in 720 min =(37/120)*720=222 books
• 12 years agoHelpfull: Yes(13) No(1)
• a.b.c work of a min =1/8+1/12+1/10=0.308
  now let x mins taken to print a book
  so x*0.308=1
  x=3.24 min
  no 12 hours=12*60 min=720 min
  number of book printed in 720 min = 720/3.24=222.22= 222 books aprox
• 12 years agoHelpfull: Yes(6) No(0)
• n1d1=n2d2
  n1=x(say)
  d1=20
  n2=x-12
  d2=32
  by solving above x=32
  
• 12 years agoHelpfull: Yes(0) No(2)