A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:

A. 250
B. 276
C. 280
D. 285

• D. 285
  That month has 5 Sundays and 25 other days.
  So, total visitors = 5*510 + 25*240 = 2550 + 6000 = 8550
  Average visitors per day = 8550/30 = 285
• 12 years agoHelpfull: Yes(15) No(0)
• D. 285
  
  Explaination : Average of Visitors in Sunday, X = 510
  Average of Visitors in Weekdays, Y = 240
  Average of Visitors in a month of 30days, Z = ?
  If the Month starts with Sunday means, it have 5 sundays and 25 week days.
  Therefore, Z = (5X + 25Y)/30
  (i.e) 5X = 5(510)
  = 2550
  24X = 24(240)
  = 5760
  Z = (2550+5760)/30
  = 8310/30
  = 285
• 12 years agoHelpfull: Yes(5) No(1)
• Answer: (d)
  Solution:
  because month is of 30 days hence
  there are 5 sundays
  and other days are=25
  so (5*510)+((6*240)*4)+240
  =8550 visitors
  so the average number of visiters are=8550/30=285
• 12 years agoHelpfull: Yes(4) No(0)
• 4*510+26*240/30=276
• 12 years agoHelpfull: Yes(1) No(5)
• D.285
  total visitors are 8550
  visitors per day in a month of 30 days=8550/30=285
• 9 years agoHelpfull: Yes(1) No(0)