Percentage, hope that helps
Answer:
(a) 2
(b) 2.25
(c) 12.5%
Explanation:
To solve this question we need to remember that

(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
Answer:
It will Decreases U.S. real GDP and on the other way round it will increases the well-being of a typical working person in the U.S.
Explanation:
The impact of the decline in working hours is that it will Decreases U.S. real GDP and on the other way round it will definitely lead to increase in the well-being of a typical working person in the U.S. because of the decline in the U.S work week which was formally 60 hours in the 1980 but now 40 hours today because a typical working person will have more time for him/her and the stress involved in working for 60 hours per week will reduce when compared with working for 40 hours per week because a typical working person in the U.S will preferred to work for 40 hours per week than 60hours per week for the betterment of their well being.
The trade union acts as AN INTEREST GROUP. An interest group refers to a group of people that seeks to influence public policy on the basis of a specific common concern or interest. An interest group can fall under one of two categories which are economic and non-economic interest groups.
Answer:
the standard of living increased
Explanation:
Between the years 1948 and 1990, the level of productivity in the United States of America increased tremendously, to the extent that it was in the doubled fold. Consequently, this increase in the level of productivity simply exemplified that, there is a substantial increase in the standard of living for the average American.
Hence, it can be concluded that, in this case, the workweek didn't get shorter because "the standard of living increased."