9 wonderful students decided to buy their math teacher and expensive presents, each contributing the same amount of money. Four other students found out about the plan and joined in, agreeing to pay their share of the present’s cost. This resulted in Saving of $33.32 for each of the original nine students. the cost of the gift, in dollars, is:

Question

a) $299.88
b) $433.16
c) $974.61
d) $1407.77
e) $3898.44

Answer 1

c / 9 = (c / 13) + 33.32