Answer:
(a) 2
(b) 2.25
(c) 12.5%
Explanation:
To solve this question we need to remember that
[tex]Total \, Productivity = \frac{Total\,Ouput}{Total \, Man \, Hours}[/tex]
(a) 10 persons produce 160 valves in 8 hours, this implies a productivity of 2=160/(8x10)
(b) 2.25= 180/(8x10)
(c) Percentage change is given by (2.25-2)/2=.125