Answer and Explanation:
The computation is shown below:
Fixed cost per unit is
= Higher Profit under Absorption costing ÷  units exceeded than sales
= $16,000 ÷ 1,000 units
= $16 per unit
Sales price per unit
= Contribution Margin Per Unit ÷ Contribution Margin Ratio
= ($16 + $14) ÷ (62.50%)
= $48
Variable Cost Per Unit is
= Sales Price Per Unit - Contribution Margin Per Unit
= $48 - $30
= $18 per unit
Unit sales volume is
= Total Profit under Absorption costing ÷ profit per unit
= $168,000 ÷ $14 per unit
= 12000 units
We simply applied the above formulas