1.

1). 552). 603). 704). 75

Answer»

LET the acid and water CONTENT in the mixture be 2X and 5x respectively

New QUANTITY of acid = 2x + 5

Total quantity of mixture = (2x + 5) + 5x = 7x + 5

(2x + 5)/5x = ½

x = 10

Total final mixture = 7x + 5 = 7 × 10 + 5 = 75 litres



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