Marie, Brenda, and Deepa all went for a run. Marie ran twice as far as Brenda, and Deepa ran 3 km less than Marie. Together, they ran a combined distance of 22 km. How far did each person run?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?