SOLUTION: A rectangle with dimensions 7x13 is enlarged by 15%. What are the new dimensions? Having trouble with this one. Can you help? Thank you

Question 807727: A rectangle with dimensions 7x13 is enlarged by 15%. What are the new dimensions?
Having trouble with this one. Can you help?
Thank you
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A rectangle with dimensions 7x13 is enlarged by 15%. What are the new dimensions?
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Original Rectangle:
Area = 7*13 = 91 sq. units.
Ratio of width to length: 7x:13x
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New Rectangle:
Area = 1.15*91 = 104.65 sq units
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Equation:
Assuming the dimensions are in the same ratio::
7x*13x = 104.65
91x^2 = 104.65
x^2 = 1.15
x = 1.0724
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New dimensions::
width = 7x = 7.5067 units
---
length = 13x = 13.9412 units
===========================
Cheers,
Stan H.
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