More trig pls explain how you do it !

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

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?

Iam at home. /: i am playing video games. translate the following statement into symbolic form.