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A telephone company in a town has 500...

A telephone company in a town has 500 subscribers on its list and collects fixed charges of Rs 300 per subscriber. The company proposes to increase the annual subscription and it is believed that every increase of Rs 1 one subscriber will discontinue the service. Find what increase will bring maximum revenue?

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To solve the problem of maximizing the revenue for the telephone company, we can follow these steps: ### Step 1: Define the variables Let: - \( x \) = increase in subscription fee (in Rs) - Current subscription fee = Rs 300 - Current number of subscribers = 500 ...
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