Earl can stuff advertising circulars in to envelopes at the rate of 66 envelopes per minutes and Allen requires a minute and half to stuff the same no. of envelopes. Working together, how long will it take Earl and Allen to stuff 660 envelopes?
1. 6 minutes
2. 3 minutes
3. 5 minutes
4. 7 minutes

• earl 1 min=66
  allen 1 min=66*2/3=44
  66+44=110
  together working=660/110=6min
• 13 years agoHelpfull: Yes(7) No(1)
• plz explain the question again..
• 13 years agoHelpfull: Yes(4) No(11)
• allen takes 1 min to stuff 44 envelopes.. so total 110 envelopes are there in 1 min.. so in 6 min 660 envelopes.. 1 option..
• 13 years agoHelpfull: Yes(2) No(0)
• earl -----66 envelope in 1 min
  allen-----66 envelope in 3/2 min
  
  
  
  
• 13 years agoHelpfull: Yes(0) No(0)
• contd..
  
  so allen make 66*2/3 envelope in 1 min=44 envelope in 1 min
  together they make (66+44) envelope in 1 min
  
  so 660/110=6 mins are reqd
• 13 years agoHelpfull: Yes(0) No(0)