Answer: 204.76%
Step-by-step explanation:
In the earlier scenario, furniture maker manufactured 47 (42 non defective) pieces per 5 laborers working 8 hours day.
Thus, the productivity in terms of units per labor hour is as follows:
![= (42)/(8*5)](https://img.qammunity.org/2020/formulas/business/college/fk7sqzgqw31lly1wvbxzsgf4rr01vanpi3.png)
= 1.05
Similarly, after the process improvement, the productivity in units per labor hour would be:
![= (128)/(8*5)](https://img.qammunity.org/2020/formulas/business/college/kucl2yar8dxy2xtdqcad5v3rucf6twtxtp.png)
= 3.2
Thus change in productivity would be calculated as:
![=(3.2-1.05)/(1.05)*100](https://img.qammunity.org/2020/formulas/business/college/kdj2htj5rcohpv43rvw8bdv7qa4w4rg6e8.png)
= 2.047 × 100
= 204.76%
Thus, the productivity of non defective parts would increase by 204.76%.