A can write 32 pages in 6 hours and B can write 40 pages in 5 hours. If they write together, in how many hours they can write 110 pages?

• A can write 16/3 page is 1 hr
  B's 1 hr work=8 pages
  A+B 's 1 hr work= 16/3+8= 40/3 pages
  
  So both ll finish 110 pages in
  
  110/40 * 3= 33/4= 8 1/4
  
  Ans: 8 hrs 15 mins
• 11 years agoHelpfull: Yes(40) No(4)
• A's 1 hr work =32/6 pages
  B's 1 hr work=40/5=8 pages
  together they can complete=32/6 + 8= 80/6 pages per hour
  for 110 pages= 110*6/80=8.25 hr
• 11 years agoHelpfull: Yes(12) No(3)
• A can write in hour 32/6 page
  similarly
  B in 1 hour= 40/5 page
  
  together (A+B) in 1 hour = 32/6 +4 40/5 = 40/3
  so,
  A+B write 40/3 page in 1 hour
  A+B write 110 page in (3/40)x 110 Hour =8 hour 15 min
• 11 years agoHelpfull: Yes(7) No(2)