(ENEM 2013) - Question Hard of BiologyLuiza decided to dye her hair and her mother's hair using colors B and C in both dyes. Color B is the one that dyes white hair and color C gives a lighter tone when exposed to light. Luiza knows that in hair with many white strands, like her mother's, the ratio between colors C and B is 1 to 3. For her, who has few white strands, the ratio to be applied is 3 parts of color C to 1 part of color B. In addition, since her mother has short hair, only 60 grams of dye are needed. For her long hair, 120 grams will be necessary. According to the situation described, the amount in grams of color B dye that Luiza should acquire to dye her hair and her mother's hair is: 360 grams.
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