Respuesta :
4 / 3 = 12 / x......4 oz water to 3 oz blue = 12 oz water to x oz blue
cross multiply because this is a proportion
(4)(x) = (12)(3)
4x = 36
x = 36/4
x = 9 <=== 9 oz of blue food coloring are needed
cross multiply because this is a proportion
(4)(x) = (12)(3)
4x = 36
x = 36/4
x = 9 <=== 9 oz of blue food coloring are needed
divide 12 by 4: 12/4 = 3
now multiply that by 3ounces of food coloring
3*3 =9 fluid ounces are needed,