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A rectangular tank can hold k liters of water. How many liters of water can tank hold if all dimensions doubles.

8k liters
12k liters
7k liters
9k liters
Explanation:

Let dimensions of tank are x $\times$ y $\times$ z = xyz.

So xyz can hold k liters of water.

Now dimensions are doubled i.e 2x $\times$ 2y $\times$ 2z=8xyz

As xyz holds k liters, so 8xyz will hold 8 $\times$ k = 8k liters of water.

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