Answer:
50
Step-by-step explanation:
The total salary was $3650.
The base salary is $3500.
$3650 - $3500 = $150
He made $150 in commission.
He makes $12 commission for every $100 he sells.
$150/$12 = 12.5
He sold 12.5 amounts of $100.
Each $100 corresponds to 4 cases.
12.5 × 4 = 50
He sold 50 cases of coffee.
