*Two types of coffee C1 and C2 are blended in the ratio 3:13 by weight to form a standard blend X. A second standard blend ,Y is formed by blending C1 ,C2 and C3 coffee in the ratio 1:7:12 by weight .Calculate : (¿) The ratio of the three types of the coffee in a third standard blend Z, formed by mixing equal weight of X and Y. (¿¿)The weight of C1 coffee in 800g of Z.
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