If the length of cube is increased by 100% , by what % does the volume increase?
100%
200%
400%
700%
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AIM TO CRACK GMAT
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theCodeToGMAT
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Volume of Cube = (Side)^3
New Side = 2*side
Increase = (NEw - OLD)/OLD = (8*side^3 - Side^3)/Side^3 = 7 .. So 700%
New Side = 2*side
Increase = (NEw - OLD)/OLD = (8*side^3 - Side^3)/Side^3 = 7 .. So 700%
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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%
GMAT assassins aren't born, they're made,
Rich
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%
GMAT assassins aren't born, they're made,
Rich
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sanju09
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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.AIM TO CRACK GMAT wrote:If the length of cube is increased by 100% , by what % does the volume increase?
100%
200%
400%
700%
Pick the nameless [spoiler]fourth[/spoiler] up. It's a nice but not a properly urbanized GMAT problem.
The mind is everything. What you think you become. -Lord Buddha
Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001
www.manyagroup.com
Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001
www.manyagroup.com
