There are 72 students and 15 teachers in a school excluding principal. Principal has 3-digits odd no. quantities of toffees and he equally distributes it among students & teachers, he gets 86 toffees remain. If he distributes among teachers, he gets 14 toffees remain. If principal add himself among teachers, how much toffee(s) will remain?
a) 1 b) 5 c) 15 d) can not determined.

• 5 is the answer.
  Let T number of toffees.
  T/87= a+86
  T/15=b+14
  Using hit and trial t will come out as 869.
  Therefore, 869/16=5 toffees remaining.
• 9 years agoHelpfull: Yes(13) No(11)
• Ans: 5
  
  Let T be total number of toffees.
  T mod 87=86. So T=87(k1)-1----(1)
  T mod 15=14. So T=15(k2)-1----(2)
  Here k1,k2 are constants.
  Lcm of 87k1,15k2=435k
  So total should be 435k-1 and should be odd.
  For k=1=>T=434( It is not odd)
  For k=2=>T=869 (Yes,It is Odd).
  So Total=869.
  So 869 mod 16= 5
• 8 years agoHelpfull: Yes(7) No(1)
• the ans is 5
  the totaal number of toffees is 869 because when there 87 people(72+15) then the remainder is 86
  when there 15 tchrs the remainder is 14
  so the answer will be the lcm of (87 and 15 )-1
  but this would be an even number
  so we multiply the lcm of 87 and 15 by 2
  and then subtract one to get the total number of toffees
• 8 years agoHelpfull: Yes(4) No(1)
• 5 toffies remain
• 9 years agoHelpfull: Yes(3) No(1)
• three digit odd number is 869 divide it by 16 remainder is 5
• 9 years agoHelpfull: Yes(2) No(0)
• Let total number of toffees are T
  total teacher + student = 72 + 15 = 87
  distributing among 87 persons , 86 left
  so,
  T/87 = a + 86
  similarly in the 2nd case,
  T/15 = b + 14
  in both the cases
  left toffies are 1 less than the divided person
  so if he distribute the toffies among 16 person(teacher + himself)
  then 15 toffies will be remain.
• 9 years agoHelpfull: Yes(1) No(4)
• Answer is 15. When there were 87 people(72 student and 15 teachers) then the number of toffees remaining were 86. Similarly, when there were 15 teacher, the number of toffees remaining after being distributed were 14. Thus, when there are 16 people, the number of yoffees remaining would be 15.
• 9 years agoHelpfull: Yes(0) No(4)
• C 15 is ans
• 9 years agoHelpfull: Yes(0) No(2)
• 15 toffee remains......
• 9 years agoHelpfull: Yes(0) No(3)