Given the following chart of jobs assigned with Johnson's rule,suppose that all the jobs (A,B,C,etc)could be evenly divided into two tasks (such as A1 and A2,B1 and B2,etc).Suppose job B is divided into jobs B1 and B2,each with a body work time of 4.5 hours and a paint time of 2 hours.How much is makespan reduced by this splitting of B? 
Definitions:
Revenue
The total amount of money received by a company for goods sold or services provided during a certain time period.
TR
Refers to Total Revenue, which is the total income a company earns from the sale of its goods and services.
Positive Profit
Positive Profit occurs when the total revenue of a business exceeds its total costs.
Total Revenue
Total Revenue refers to the total receipts from sales of goods or services by a firm over a specified period.
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