Sandy was completing an art project and needed the color pink, when she realized she did not have any pink. She quickly remembered that red and white make pink, so she mixed the red and white paint in the ratio of 3:5 to make pink paint. She wants to make 56 liters altogether of pink paint. She needs to figure out how much red paint she would need to buy and how much white paint she would need to buy to make 56 liters. How much red and white paint does she need to buy?