Problem 1 (2 points): The demand function for a firm’s domestic and foreign markets are: P1 = 50 – 4Q1
P2 = 40 – 5Q2
and the total cost function is:
TC = 25 + 12Q, where Q = Q1 + Q2.
a/ Determine the prices needed to maximize profit with and without price discrimination;
b/ Find the maximum profit values in these two cases and give your comment

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?