Roja and Edward were working in a courier company. Roja takes 6 hours to pack 32 parcels while Edward takes 5 hours to pack 40 parcels. How long they will take to pack 330 parcels working together ?
a) 24 hours 45 minutes b) 23 hours c) 25 hours 15 minutes d) none of these.

• Roja ll do 16/3 parcels in 1 hr [ 1/6*32]
  Edward ll do 8 parcels in 1 hr [1/5*40]
  
  Roja nd edward's 1 hr work is
  
  16/3+8= 40/3
  
  Therfore they ll do 330 parcel in
  
  330/40 * 3= 99/4 = 24 3/4hrs ===> 24hrs 45mins
• 10 years agoHelpfull: Yes(96) No(10)
• Speed of Roja per hour = 32/6 parcels
  Speed of Edward per hour = 40/5 = 8 parcels
  When both of them work together in one hour they will pack
  32/6 + 8 = 13 1/3 parcels
  For packing 330 parcels it will take = 330 / parcels that can be packed by them in one hour = 330 / 13 1/3 = 25 hours 15 minutes
• 10 years agoHelpfull: Yes(9) No(13)
• roja's 1 hr work=32/6
  edwrd's 1 hr work=40/5=8
  roja and edwrd's 1hr wrk=(32/6)+8= 40/3
  then,in 1 hr work done by them is =40/3
  3/40hr to cmplt work=1 parcel
  3/40 * 330 = 330 parcels
  99/4 hrs = to pack 330 parcels
  24 hrs 75 mins.
  so,correct answr is option d.
  
• 10 years agoHelpfull: Yes(9) No(5)
• for 6hours,32 parcels means for 1 hour,it is 32/6=16/3.
  similiarly,for 5 hours,40 parcels means ,for 1 hour,it is 40/5=8.
  roja and edward together in 1 hour =16/3+8=40/3
  hence for 1 hour they together made 40/3 parcels and for X hours 330 parcels.
  hence X=330/(40/3)=24.75 hours=24+1hr 15min=25hours15mins
• 10 years agoHelpfull: Yes(3) No(2)
• ans: d)none of these.
  roja can pack 5.3 parcels in 1hr i.e,32/6=> 1hr-5.3parcels
  edward=> 1hr- 8parcels. both working together can produce 8+5.3 parcels an hour. aprox. to 12 solving 330/12 it will get a total of 27.5 hrs
• 10 years agoHelpfull: Yes(2) No(4)
• Roja's 1 hour work=[32/6] parcels
  edward's 1 hour work=[40/5]=8 parcels
  
  [32/6 + 8] parcels are packed in=1 hour together
  1 parcel is packed in=[80/4] together
  330 parcels are packed in=330/[80/4] together=======24hrs75minutes ans.
  
  
• 10 years agoHelpfull: Yes(2) No(0)
• 24 hours 45 minutes
• 9 years agoHelpfull: Yes(2) No(2)
• Efficiency of Roja=32/6=5.33%
  Efficiency of Edward=40/5=8%
  Working together=5.33%+8%=13.33%
  Therefore,They will take together=330/13.33=24.75 Hour or 24 hours 45 Min
• 8 years agoHelpfull: Yes(2) No(0)
• Roja-32/6 parcel/hr=16/3 parcel/hr
  Edward-40/5=8 parcel/hr
  Roja+Edward=(8+16/3)
  =40/3
  330 parcels working together=330 x 3/40
  =99/4 hr
  =24hr 45min
• 10 years agoHelpfull: Yes(1) No(1)
• ans:
  99/4 hours
  = 24.75 hours
  =24*(3/4) hours
  =24 hours + (3/4)hour
  = 24 hr +(3/4)*60 min
  =24 hr +45 min
• 9 years agoHelpfull: Yes(1) No(0)
• Speed of Roja per hour = 32/6 parcels
  Speed of Edward per hour = 40/5 = 8 parcels
  When both of them work together in one hour they will pack
  32/6 + 8 = 13 1/3 parcels
  For packing 330 parcels it will take = 330 / parcels that can be packed by them in one hour = 330 / 13 1/3 = 25 hours 15 minutes
• 10 years agoHelpfull: Yes(0) No(1)
• 25hr. 15 min
  
• 9 years agoHelpfull: Yes(0) No(3)
• Option a) 24hrs 45mins
• 9 years agoHelpfull: Yes(0) No(0)