Latest Exam Aptitude Question SOLUTION: A company makes a mixture which contains 2% alcohol. If 10 litres of alcohol is added to the mixture, then the concentration increases to 5%. What is the approx. quantity of the mi

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A company makes a mixture which contains 2% alcohol. If 10 litres of alcohol is added to the mixture, then the concentration increases to 5%. What is the approx. quantity of the mixture?
A. 316
B. 315
C. 310
D. 300

Asked In Exam SURESH CHOWDARY (7 years ago)

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Devendra Marghade  (7 years ago)

A. 316

Let in the mixture of x litres, quantity of alcohol=(2/100)*x=x/50 litres.
When 10 litres of alcohol is added, quantity of mixture= (x+10) litres and
Quantity of alcohol=10+ x/50 litres.
So % of alcohol in new mixture= (10 + x/50)/(x+10) = 5/100
=>100(500+x) = 250(x+10)
=> 2(500+x) =5(x+10)
=> x= 950/3= 316.66 ~ 316 litres.

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