Adorn Furniture manufactures a small table and a large table. The small table sells for $ 900

$900, has variable costs of $ 560

$560 pertable, and takes 10 direct labor hours to manufacture. The large table sells for $ 1 comma 500

$1,500, has variable costs of $ 980

$980, and takes eight direct labor hours to manufacture. Calculate the contribution margin per direct labor hour for the small table