Answer:
15 tables
Explanation:
Chairs = $200
Tables = $600
Maximum items = 39
Minimum sales = $13,000
If 20 chairs are sold, revenue is $4,000. At least $9,000 in additional revenue is required. To earn $9,000, a minimum of 15 tables would need to be sold, which is fine since a maximum of 19 tables is permitted to be sold.