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CuBE!

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by theCodeToGMAT » Mon Oct 21, 2013 10:52 pm
Volume of Cube = (Side)^3

New Side = 2*side

Increase = (NEw - OLD)/OLD = (8*side^3 - Side^3)/Side^3 = 7 .. So 700%
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by [email protected] » Mon Oct 21, 2013 11:59 pm
Hi Aim,

For these types of questions, you might find it useful to TEST VALUES.

If the side length = 2, then the Volume = (2)(2)(2) = 8

Now, increase the length by 100%

New side length = 4, so the new Volume = (4)(4)(4) = 64

% increase = (New - Old)/Old = (64 - 8)/8 = 56/8 = 7 = 700%

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by sanju09 » Tue Oct 22, 2013 12:10 am
AIM TO CRACK GMAT wrote:If the length of cube is increased by 100% , by what % does the volume increase?

100%
200%
400%
700%
A 100 percent increase in value doubles the value, and if the side is doubled, volume would go eight folded, showing a [spoiler]700[/spoiler] percent increase in value.

Pick the nameless [spoiler]fourth[/spoiler] up. It's a nice but not a properly urbanized GMAT problem.
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