MBA Exam

There are three hoses, A, B and C, attached to a reservoir. A and B can fill the reservoir alone in 20 and 30 mins,respectively whereas C can empty the reservoir alone in 45 mins. The three hoses are kept opened alone for one minute each in the theorder A, B and C. The same order is followed subsequently. In how many minutes will the reservoir be full?

1) 45
2) 46
3) 47
4) 48

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MBA Other Question

In a certain class, the number of students who either do not study at home or do not attend classes is a third more than that of those who study at home or attend classes. Further, the number of students who do not study at home but attend classes is two fifths more than those who study at home but do not attend classes, while the number of student who study at home as well as attend classes is half that of those who neither study at home nor attend classes. If the total number of students in the class is 150, then find the number of students who study at home as well as attend classes.

1) 35
2) 25
3) 30
4) 45
X,Y,Z invest, in a partnership.the amount that each of them invest is in the ratio of x:y:z and their profits are in the ratio of z:y:x,the ratio of their period of investments is?pl. provide sol. also.

1) x^2:y^2:z^2
2) xy:yz:zx
3) z^2:zx:x^2
4) x^2:xz:z^2