MBA Exam

if 3 men or 4 women or 6 boys can finish a piece of work in 135 days working 8 hours a day,12 men,8 women and 18 boys working 12 hours a day can finish the work in??

1) 13.5
2) 12
3) 10
4) 8

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MBA Other Question

A MAN TRAVELS THREE FIFTH OF THE DISTANCE AB AT SPEED OF 3a AND REMAINING AT A SPEED OF 2b.IF HE GOES FROM B TO A AND BACK AT A SPEED OF 5c THENCAT 1996 PAPER......DONT HAVE OA

1) 1/a+1/b=1/c
2) a+b=c
3) 1/a+1/b=2/c
4) not
An industrial solvent of 90% strength is stored in a container of capacity 150 liters. The container is filled to 80% of it's capacity.Now it's required to decrease the concentration to less than 60%. for doing this either pure water can be added or solution can be removed. But removal can only be done when there is no place for adding water.at a given time only 10 liters of solution can be added or removed.How many times water should be added to solution?

1) 4
2) 5
3) 6
4) 7
5) 9
6) Better leave it.