Which four digit number is equal to its first digit raised to the power of its second digit, multiplied by its third number raised to the fourth digit. so axby=(a^x)(b^y)

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