Assuming the total population is 100 million, the civilian labor force is 50 million, and 47 million workers are employed, the unemployment rate is: question 26 options: 3 percent. 6 percent. 7 percent. 53 percent.

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?