Mixture

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 4

A jar full of disinfectant contains 40% alcohol. A part of this disinfectant is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26%. The quantity of disinfectant replaced is:

1/ 3
2/ 3
2/ 5
3 /5

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Correct Answer: B

So, ratio of 1st and 2nd quantities = 7 : 14 = 1 : 2

∴Required quantity replaced =2/ 3

Mixture

Question: 4

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Correct Answer: B

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