by Pramod
(Pune, Maharashtra, India)

Quantitative Aptitude Test Question 10

(567/(162+x) = 1 1128=162+x )
729 ml of a mixture contains milk and water in ratio 7:2. How much of the water is to be added to get a new mixture containing half milk and half water?

total mixture is 729.
it has 7x part milk and 2x part water
i.e 7x+2x=729 x=81
Milk is 7*81=567 . Water is 81*2=168
suppose after adding y quantity of water their ratio become equal. i.e both become equal in quantity.

567/(168+y) = 1/1

567 = 168+y
567 - 168 = y
y=399

this answer is not present in option But this is correct one. Anybody can cross-check it

Average Rating     Rating     Wrong Calculation Above by: GAURAV DAHUJA This is a wrong calculation. 81*2=162 nd not 168. Therefore your answer is coming wrong. It should be 405. 567/(162+x)=1 x=567-162=405

 Rating     Wrong Calculation Above by: Anonymous This is a wrong calculation. 81*2=162 nd not 168. Therefore your answer is coming wrong. It should be 405. 567/(162+x)=1 x=567-162=405 GAURAV DAHUJA

 Rating     no i dont agree by: Anonymous u can see my comment titled Answer to the question 10

 Rating     Additional comments by: Anonymous I totally agree with this input...I wonder why for half and half water mixture we need 7:3 ratio....Please provide ur comments..i dint get the answer

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