Answer:
$48
Explanation:
The computation of MRP of this additional worker is shown below:-
At 72 units, revenue earned = Number of units × Sold units
= 72 × $6
= $432
At 80 units, revenue earned is
= 80 units × $6 per unit
= $480
Marginal revenue product of the additional worker = At 80 units, revenue earned - At 72 units, revenue earned
= $480 - $432
= $48