Given that the recruiting budget is $30,000 out of which $8,600 has been spent on advertising and $7,650 on interviewing.
Thus the amount remaining to be spent is $30,000 - $8,600 - $7,650 = $13,750
Let the maximum selling price on which the bank would pay 5.5% commission and stay within its budget be x, then
1.055x = $13,750
x = $13,750 / 1.055 = $13,033.18
Therefore, the maximum selling price on which the bank would pay 5.5% commission and stay within its budget is $13,033.18