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An Internet service provider allows a certain number of free hours each month and then charges for each additional hour used. Wells, Ted, and Vino each have separate accounts. This month the total hours used by Wells and Ted was 105, and each used all of their free hours. Their total cost was $\$10$. Vino used 105 hours by himself and had to pay $\$26$. What is the number of cents charged for each extra hour

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Giangiglia

Answer:

[tex]P_{extra}=0.3 \frac{$}{hr}[/tex]

Step-by-step explanation:

Wells and Ted used 52.5 hr each (free hours)  and paid 10$

Vino used 105 hr:

[tex]H_{vino}=H_{free}+H_{extra}[/tex]

[tex]H_{extra}=105-52.5=52.5 hr[/tex]

He paid 26$ (the 10$ of the free hours and 16$ for the extra):

[tex]P_{extra}=\frac{16$}{52.5 hr}[/tex]

[tex]P_{extra}=0.3 \frac{$}{hr}[/tex]

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