Three Boys cut out hundredths decimal models. Fred, does not shade any of his models. Jeff, shades four fifths of one model. Aaron, shades two models and half another model. What decimal represents the amount each boy shades?

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?