In what ratio must a mixture of 40% acid be mixed with that of 60% acid to get a mixture of 49% acid? ?->(Show Answer!)

1. In what ratio must a mixture of 40% acid be mixed with that of 60% acid to get a mixture of 49% acid?

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By: anil on 05 May 2019 02.04 am

Let the ratio in which 40% acid be mixed with that of 60% acid = $$x:y$$ According to ques, => $$40x+60y=49(x+y)$$ => $$40x+60y=49x+49y$$ => $$49x-40x=60y-49y$$ => $$9x=11y$$ => $$frac{x}{y}=frac{11}{9}$$ $$ herefore$$ Required ratio = 11 : 9 => Ans - (C)

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