Question

1. sairas cell - phone company charges 40 dollars plus 25 cents a minute for every minute after 200 minutes used. her bill was 65 dollars last month. determine how many minutes did saira go over her limit?

Explanation:

Step1: Calculate extra cost

The base - charge is 40 dollars and the total bill is 65 dollars. So the extra cost for the minutes over 200 is $65 - 40=25$ dollars.

Step2: Convert cents to dollars

Since the rate for extra minutes is 25 cents per minute, and 25 cents = 0.25 dollars.

Step3: Find number of extra minutes

Let $x$ be the number of extra minutes. We know that the cost of extra minutes is given by the formula $Cost = Rate\times Number\ of\ minutes$. So $x=\frac{25}{0.25}=100$ minutes.

Answer:

100