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Banking Sample Paper IBPS Clerk (PT) Sample Paper Test-1

  • question_answer
    In a 40-litre pot, milk and water are in the ratio of 3 : 7. Another pot has milk and water in the ratio of 4 : 1. How many litres of the second variety of milk must be poured into 40 litres of the first variety of milk so that the new mixture has milk and water in the ratio of 2 : 3?

    A)  11.75 litres       

    B)  12.5 litres     

    C)    10 litres

    D)    14 litres           

    E)  13.25 litres

    Correct Answer: C

    Solution :

    In 40 litres mixture the amount of milk\[=40\times \frac{3}{10}=12\,litres\] and water\[=40\times \frac{7}{10}=28\,litres\] Let 5x litres mixture from 2nd pot be poured into the first pot. In 5x litres, milk is 4x litres and water is x litres. Now, \[\frac{12+4x}{28+x}=\frac{2}{3}\] or, \[3(12+4x)=2(28+x)\] or, \[12x-2x=56-36\] or, \[10x=20\] \[\therefore \]\[x=2\] \[\therefore \] Reqd amount of the mixture\[=5\times 2=10\,litres\]


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