Answer:
(a) 3.9 units/hour; 3.5 units/hour
(b) 11.43%
Explanation:
(a) Current period productivity:
= Current output ÷ Current labor hours
= 156 units ÷ 40 hours
= 3.9 units per hour
Previous week's productivity:
= Previous week's output ÷ Previous week's labor hours
= 105 units ÷ 30 hours
= 3.5 units per hour
(b) Percentage change in worker's productivity:
= (Change in productivity ÷ Previous week's productivity) × 100
= [(3.9 - 3.5) ÷ 3.5] × 100
= 11.43%
Therefore, the worker's productivity increases by 11.43%.