Two barrels contain a mixture of ethanol and gasoline The content of the ethanol is 60 in the first ...........

Quantitative Aptitude ( CCS) Mixture and Alligation

Two barrels contain a mixture of ethanol and gasoline. The content of the ethanol is 60% in the first barrel and 30% in the second barrel. In what ratio must the mixtures from the first and the second barrels be taken to form a mixture containing 50% ethanol?

2 : 1

2 : 5

1 : 3

3 : 2

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Explanation:

   Mixture I                          Mixture II
Ethanol –(3/5)                  Ethanol(3/10)
   (1/2)
      (1/5)                               (1/10)
      2    :    1

Hence, option 1 is the correct answer.

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