Joy leather, a manufacturer of leather products, makes three types of belts A, B and C which are processed on three machines M1,M2and M3. Belt A requires 2hours on M1, 3hiurs on M2, 2hours on M3. Belt B requires 3hours on M1, 2hours on M2 and 2hours on M3. Belt C requires 5hours on M1, 4hours on M2 and 4hours on M3.These are 8hours of time per days available on machines M1, 10hours of per days available on machines M2,15 hours of time per days available on machines M3. The profits gained from belt A is birr 3per unit, From belt B is birr 5 per unit, From belt C is birr 4 per unit. What should be the daily production of each type of belt so that the profit is maximum? A) Formulate the problem as LPM
B) solve LPM using simplex algorithm
C) interpret the shadow prices.

The hawthorne works was a large western electric factory with 45,000 employees. during the 1920s and 1930s, hawthorne works was the site of some well-known industrial studies. in one of the studies, researchers investigated the impact of different working conditions on worker productivity. prior to the start of the study, researchers secretly measured workers' productivity for several weeks. then researchers chose two workers, who then chose their own teams. the teams were separated from the general workforce and completed their work in different experiment rooms where the researchers could observe them more easily. over a 5-year period researchers manipulated the structure of the workday for each team (number and duration of breaks and number of hours per shift). for each of these changes in working conditions, the researchers measured the effect on productivity. for some conditions, such as frequent short breaks, workers rebelled by intentionally decreasing productivity. why did the researchers secretly measure the workers' productivity before creating the two treatment groups? a, to create similar treatment groups so that a cause-and-effect relationship could be establishedb, to draw conclusions about the productivity of all workers in the plant based on the test groupsc, to directly control for confounding variablesd, to provide a baseline for measuring worker productivity

Which term describes an alternative to car buying where monthly payments are paid for a specific period of time, after which the vehicle is returned to the dealership or bought? a. car financing b. car maintenance c. car leasing d. car ownership

Both renewable and nonrenewable resources are used within our society. how do the uses of nonrenewable resources compare to the uses of renewable resources?