https://www.gkbymrdj.com/the-average-salary-of-a-group-of-unskilled-workers-is-10000-and-for-a-group-of-skilled-workers-is-15000-combines-salary-is-12000-what-is-the-percent-of-skilled-workers/
The average salary of a group of unskilled workers is 10,000 and for a group of skilled workers is 15,000. Combines salary is 12,000. What is the percent of skilled workers?