Alicia says that in 8 years twice her dog's age will be 20. how old is alicia's dog now? write and solve an equation to solve the problem

Several paint mixtures are made by mixing blue paint and white paint. paint colors blue paint white paint mixture a 5 cups 12 cups mixture b 6 cups 6 cups mixture c 4 cups 12 cups mixture d 5 cups 6 cups which mixture has the highest ratio of blue paint to white paint