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Problem Solving (PS) | Re: The cost price of 10 articles is equal to the selling price of 8 artic

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10 articles at price x = 8 articles at price y

10x=8y=100
x=10
y=12.5

Determine change
(new-old)/old
=(2.5/10) x (100)
=25%

*excuse my basic language on this Image

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