95.George and Mark work for a company.George can finish a certain job in 30 days.Mark can finish the same work in 45days.A project was taken by the company and George was made superior to Mark.This move was not liked by Mark.So,Mark did not work for 15 days.Find the total number of days the entire work was completed?
a)15 b)9 c)23 d)24
96) George and Mark paint 720 boxes in 20 days. Mark and Hari in 24 days. Hari and George in 15 days. George works for 4 days, Mark works for 8 days, Hari works for 8 days. The total no of boxes painted by them is?
a)252 b)516 c)348 d)492
97) Which of the following numbers must be added to 5678 to give remainder of 35 when divided by 460?
a)980 b)797 c)955 d)618
98) If int(3.4)=3; int(4.2)=4; The value of int(1/2) + int(1/2 + 1/100) + int(1/2 + 2/100) + . . . . . . . int(1/2 + 99/100) is?
a)50 b)15 c)75 d)25

• 95) G 1day work = 1/30
  M 1day work = 1/45
  G&M 1day work together =1/30+1/45
  =1/18
  Work done by G for 15 days= 15*(1/30)= 1/2
  
  Remaining work =1-1/2=1/2
  1/18th work is completed in 1day.
  Therfore, 1/2th work is completed in 9 days
  Total = 15+9=24
• 11 years agoHelpfull: Yes(4) No(2)
• 96) 348
  98) 50
• 12 years agoHelpfull: Yes(0) No(0)
• 95)LCM of 30 and 45 is 90, so total work is 90
  George can do 90/30=3 work a day similarly mark can do 90/45=2 work a day
  for the first 15 days mark will not work for first 15 days so George only will work for first 15 days and he will complete 45 work and the remaining 45 work will be done by both George and Mark.
  45/(2+3)=9
  so 15+9=24
• 10 years agoHelpfull: Yes(0) No(0)