A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make green paint. Which ratio of gallons of blue paint to gallons of yellow paint will make the same shade of green paint?
when you multiply both of the ratios of paint by 2 you get 10 and 18 which makes the same shade if green paint because the ratio is just 2 times more if the original ratio (9:5)