Compare each decimal using < , > or =. 1. 0.2 0.3 2. 0.75 0.7 3. 5.89 5.899 can you ? if so i really appreciate it.

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?