A manufacturing company introduced a process improvement. As a result, output increased by 30% from 60 units/hour to 90 units/hour. Moreover, due to improved quality, the sale price of each unit produced increased by 5%. All this was achieved with less material, reducing material cost per unit from $16 to $12. However, the number of workers increased from 5 to 6 and labour cost increased by 10% from $12/hour. Overhead is charged at 1.6 times the labour cost.
1. 10 Calculate the percentage increase in multifactor productivity associated with the process improvement?