What amounts (in litres) of 90% and 97% pure acid solutions respectively are mixed to obtain 35 L of 95% pure acid solution?
Explanation:
∴ Amount of the solution x and y in ratio 2 : 5
Amount of 90% acid in solution x = 2/7 × 35 = 10L
Amount of acid in solution y = 5/7 × 35 = 25L
Hence, option (d).
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