Question
Mixture X has acid and petrol in the ratio 11:9. Mixture
Y has 25% acid, the rest water. If 36 litres of mixture X is blended with 24 litres of mixture Y, what is the % of acid in the final mixture?Solution
ATQ,
% of acid in mixture X = 100 × (11/20) = 55% So, total quantity of acid in the newly formed mixture = 36 × 0.55 + 24 × 0.25 = 19.8 + 6 = 25.8 litres Total quantity of the newly formed mixture = 36 + 24 = 60 litres So, required % = (25.8/60) × 100 = 43%
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