A sales associate's goal is to make $58,000 in gross collected commissions next year. He feels that his listings should contribute about 50% of the required income. The average commission per transaction in his office is $1,200, and about two-thirds of his listings are expected to sell. He gets about three listings in five listing presentations. Approximately how many presentations must he make monthly to stay on target?
a) 22
b) 30
c) 45
d) 60
