1 to 100 of Prime Numbers 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97. The number 15 has divisors of 1,3,5,15 because: 15/1=15 15/3=5 15/5=3 15/15=1 So 15 is not a prime number. The number 13 has only two divisors of 1,13. 13/1=13 13/13=1 So 13 is a prime number.
Let x = # of original members Cost per person (originally) = 832/x Cost per person after 6 more people = 832/(x+6) Solve 832/x=832/(x+6) +6 (because the cost was reduced by 6 Solve for x. x = 26 or -32 (but x is number of members, so it can't be negative) # of original members is 26. Original cost is 832/26 = $32 per person.
