CAT Exam Category

Three beakers have capacity of 250ml, 650ml and 200ml. 682 ml of Juice is poured into them so that the same fraction of each is filled. The volume filled in the largest beaker will be:

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20% of the students in a class failed in an examination. Out of the students who failed, 75% were males. Male students who failed constitute 90% of the economically poor students in the class. What is the ratio of the number of economically poor students to the number of students in the class?
A cistern has 3 pipes A,B and C. A and B can fill the tank in 15 and 18 minutes respectively whereas all three simultaneously take 45 minutes. Let flow of water in every pipe change directions for two minutes after every five minutes of regular flow,beginning with regular flow. How much time will now be taken to fill the empty tank?