Aptitude Test Series


Q.  Presently a mixture in a tub contains substances A and B in the ratio of 7:5. If 9 litres of this solution is drawn out and B is added to the mixture in certain quantity the resulting mixture becomes 7:9. How much litres of liquid A was kept in the tub initially?

a. 32
b. 20
c. 27
d. 21


ANSWER: See Answer
 
No explanation is available for this question!
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