Answer: 161.1%
Explanation:
Given that,
Direct labor costs for Chester = $32,680
Labor costs could have been $20,000 higher
Productivity index shows the ratio between the labor costs with improvements and labor costs without improvement in production.
Productivity Index = [tex]\frac{Labor\ cost\ without\ improvement}{Labor\ cost\ with\ improvement}\times100[/tex]
= [tex]\frac{32,680+20,000}{32,680}\times100[/tex]
= 161.1%