7.D.24 Suppose that a life insurance company insures 4200 40-year-old per year, and the death benefit is $45,000. How much can the cor The insurance company can expect a(n) $ ) 1 (Type a whole number.)​

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?