Answer:
Objective Function, 
Subject to the Constraints


Step-by-step explanation:
Let the number of black t.v. produced =b
Let the number of colored t.v. produced =c
at most, 2000 units of color t.v. can be sold i.e. 
at most 4000 units of black-and-white TVs can be sold i.e. 
Total man hours per product = Number of Units X Man Hour Per Unit
A color TV requires 20 man-hours = 20c
A black-and-white TV requires 15 man-hours =15b
Since Maximum number of man Hours is 60000 hours

The unit profits of the color TV is $60, therefore total profit =60c
The unit profits of the black-and-white TVs $30, respectively, therefore total profit =30b
Since we are to maximize profit, the Objective Function, 