Acar radiator has a 16-quart capacity and is currently filled with a 40% antifreeze solution. how many quarts of this solution should be drained off and replaced with 100% antifreeze to obtain a 50% antifreeze solution?

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

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?