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Proportion

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Proportion

Postby nycmath » Sat Aug 15, 2026 5:27 am

If 30 pens sell for y dollars, what is the price p of 130 pens?
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Re: Proportion

Postby Eigenvalue » Sat Aug 15, 2026 9:48 am

We can make a proportion:
[tex]\frac{y}{30}[/tex]=[tex]\frac{p}{130}[/tex]
30y=130p
y=[tex]\frac{13p}{3}[/tex]

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Re: Proportion

Postby nycmath » Sat Aug 15, 2026 11:33 pm

Eigenvalue wrote:We can make a proportion:
[tex]\frac{y}{30}[/tex]=[tex]\frac{p}{130}[/tex]
30y=130p
y=[tex]\frac{13p}{3}[/tex]


You are right.

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