Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
A. 7 hours 30 minutes B. 8 hours
C. 8 hours 15 minutes D. 8 hours 25 minutes

• in 1hr, Ronald=32/6 elan=40/5
  if they work together=32/6+40/5=40/3
  time need to do assignment is=3*110/40=33/4=8hr 15min
• 12 years agoHelpfull: Yes(56) No(19)
• 1hr they work together =32/6+40/5=40/3
  time need to type assignment for 110 pages is 110/(40/3)=(110*3)/40=33/4=8hr25min
• 8 years agoHelpfull: Yes(13) No(11)
• Answer is C. 8:15 min
  ronald 1 hour page =32/6
  elan 1 hr page =40/5
  (r+s) 1 hr page will =32/6+40/5 = 40/3
  110 page will complete time is =110/(40/3)
  8:25
  i.e 8 hr and 0.25 hr {0.25hr =(1/4)th of an hour=(1/4)th of 60=15 minutes}
  There fore ans. is " C" and not "D "
• 7 years agoHelpfull: Yes(5) No(0)
• D. ans 8:25 min
  ronald 1 hour page =32/6
  elan 1 hr page =40/5
  (r+s) 1 hr page will =32/6+40/5 = 40/3
  110 page will complete time is =110/(40/3)
  8:25 min
• 8 years agoHelpfull: Yes(4) No(10)
• 33/4=8hours and 15min
• 8 years agoHelpfull: Yes(3) No(1)
• no pages typed by ronalds in 1hr=32/6=16/3
  no pages typed by elan in 1hr=40/5=8
  no pages typed by both in 1hr=16/3+8=40/3
  time taken to type to type110 pages is 3/40*110=8 hr15min
• 8 years agoHelpfull: Yes(3) No(0)
• how 33/4 = 8h 15m? it should be 8h 25m...
• 8 years agoHelpfull: Yes(1) No(8)
• 8 hours 25 min
  
• 8 years agoHelpfull: Yes(1) No(5)
• Total pages they both type together in 1 hour-13.3 pages
  So 110 pages they can type in-110/(40/3)=8h 15 min
• 7 years agoHelpfull: Yes(1) No(0)
• 8 hour 25 minutes is the right one
• 5 years agoHelpfull: Yes(1) No(0)
• Number of pages typed by Ravi in 1 hour =32/6= 16/3
  Number of pages typed by Kumar in 1 hour = 40/5 = 8
  Number of pages typed by both in 1 hour = ( 16/3 + 8 ) = 40/3 .
  Therefore Time taken by both to type 110 pages = ( 110 x 3/40 ) hours
  = 8 hours 15 minutes.
• 7 years agoHelpfull: Yes(0) No(1)
• Ronald=32/6
  Elan=40/5
  (32/6)+(40/5)=110
  16/3+8=110
  40/3=110
  110*3/40=33/4
  8 hours 15 min
• 7 years agoHelpfull: Yes(0) No(2)