MBA Exam

Let x = (n4 + 256 + 4n(n2 + 16))/(n+4)2. If 4 <= n2 <= 49 then,

1) 12 <= x <= 95
2) 28 <= x <= 95
3) 12 <= x <= 37
4) None of these

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MBA Other Question

When 35 is subtracted from X, then it reduced to 80%. Then what is the value of 4/5 of X.

1) 70
2) 140
3) 160
4) 80
There are three equal containers that are completely filled with different water-alcohol mixtures with water and alcohol in the ratio 2 : 3, 3 : 4 and 4 : 5 respectively. They are emptied into a bigger container. What fraction of the mixture in the bigger container should be replaced by water so that the resulting mixture has equal quantities of water and alcohol?

1) 43/945
2) 143/945
3) 43/544
4) 143/1088