A can print 50 papers in 10 hours.Both A and B together can print 70 papers in 10 hours.In how many hours B alone can print 26 papers?

• 50/10 + x = 70/10,
  
  that is A can print 5 papers in 1 hr and A and B can print in 7 papers in 1hr..
  
  then x=20/10
  
  which implies x i.e, B can print 2 papers in 1 hr..
  
  hence,
  if 1 hr - 2 papers, then
  for 26 papers it is 26/2 = 13 hrs
  
  Ans.13 hrs
• 12 years agoHelpfull: Yes(5) No(0)
• A -> 50 in 10 hrs -> 5 in 1hr
  A+B -> similarly, 7 in 1hr
  therefore B prints 7-5=2 in 1 hr
  for 26 papers -> 26/2 = 13 hrs
• 12 years agoHelpfull: Yes(3) No(0)
• A can print 50 papers in 10 hrs ,i.e. 50/10 papers in 1 hour.
  B can print x papers in 1 hour,now A + B can print 70 papers in 10 hours,i,e 7 papers in 1 hour..
  A + B = 7
  5 + x = 7
  x = 2papers.
  B can print 2 papers in 1 hour.and 26 papers in 13 hours.
• 12 years agoHelpfull: Yes(0) No(0)
• a can print 50 pages in 10hours
  A=50/10=5
  a+b=70/10=7
  b=2
  b can print 26 papers in 26/2=13 hours
• 12 years agoHelpfull: Yes(0) No(0)