Lee watches TV for 4 hours per day. During that time, the TV consumes 200 watts per hour. Electricity costs (12 cents)/(1 kilowatt-hour). How much does Lee's TV cost to operate for a month of 30 days?

To determine how much it costs to operate Lee's TV for a month of 30 days, we'll follow these steps:

### 1. Calculate the daily energy consumption:
The TV consumes 200 watts per hour. Since Lee watches TV for 4 hours per day:

\[
\text{Daily energy consumption} = 200 \text{ watts} \times 4 \text{ hours} = 800 \text{ watt-hours}
\]

Since 1 kilowatt-hour (kWh) is equal to 1000 watt-hours, we convert the daily consumption into kilowatt-hours:

\[
\text{Daily energy consumption} = \frac{800 \text{ watt-hours}}{1000} = 0.8 \text{ kWh}
\]

### 2. Calculate the monthly energy consumption:
Multiply the daily energy consumption by 30 days:

\[
\text{Monthly energy consumption} = 0.8 \text{ kWh/day} \times 30 \text{ days} = 24 \text{ kWh}
\]

### 3. Calculate the cost of operating the TV for a month:
The cost of electricity is 12 cents per kilowatt-hour. Therefore, the monthly cost is:

\[
\text{Monthly cost} = 24 \text{ kWh} \times \$0.12/\text{kWh} = \$2.88
\]

### Final Answer:
The cost to operate Lee's TV for a month of 30 days is **$2.88**.

Would you like more details or have any questions?

Here are 5 related questions for further practice:

1. What would be the cost if the TV consumed 250 watts per hour instead?
2. How much energy does the TV consume in a week?
3. If Lee reduced TV watching to 2 hours per day, how much would he save in a month?
4. How much does it cost to run two TVs with the same specifications for the same duration?
5. What would be the monthly cost if the electricity rate increased to 15 cents per kilowatt-hour?

**Tip:** When calculating costs related to power consumption, always ensure to convert watts to kilowatts to match the billing units.

Learn how to calculate the cost of operating Lee's TV for a month of 30 days. Understand the daily energy consumption, convert watt-hours to kilowatt-hours, and determine the monthly cost based on electricity rates. Get a detailed step-by-step solution with example calculations.

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