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slavikrds [6]
3 years ago
12

In the past you paid $800 per month to rent your apartment. You now pay $900 per month for your rent. What is the percent increa

se in your rent?
Mathematics
1 answer:
olchik [2.2K]3 years ago
6 0
If we take 800 to be the 100%, and the difference is just 100 bucks, how much is 100 off of it in percentage?

\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
800&100\\
100&p
\end{array}\implies \cfrac{800}{100}=\cfrac{100}{p}\implies p=\cfrac{100\cdot 100}{800}
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