Answer:
since the numbers are missing, i looked for similar questions:
               Product A Product B
Direct material    $9      $20
Direct labor        $7         $15
the predetermined overhead rate = $396,000 / [(5,500 x 1.5) + (22,000 x 3)] = $396,000 / 74,250 direct labor hours = $5.333333 per direct labor hour
total production costs per unit:
Product A = $9 + $7 + ($5.33333 x 1.5) = $24
Product B = $20 + $15 + ($5.33333 x 3) = $51