THIS IS MATH BUT NO ONE WILL HELP ME THERE! PLEASE HELP ME

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

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?

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250