Question

Knowing that you use 245 KWH 7 a.m. – 7 p.m. and 165 KWH 7 p.m. – 7 a.m., answer the following questions using the chart below:


Constant Usage

$0.05324/KWH

Daytimer (Most usage between 7 a.m. – 7 p.m.)

As long as most power used is 7 a.m. – 7 p.m., then you receive a 20% discount on power usage 7 p.m. – 7 a.m.

$0.05456/KWH

NightTimer (Most usage between 7 p.m. – 7 a.m.)

If more than 50% of power usage is outside of 7 p.m. – 7 a.m., then you have to pay the Daytimer rate for all power used between 7 a.m. – 7 p.m.

$0.05281/KWH


How much would you have paid on the Constant Usage plan?

(1 point)
Responses

$21.83
$21.83

$21.65
$21.65

$22.37
$22.37

$22.08
$22.08
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Answer 1

To calculate how much would have been paid on the Constant Usage plan, we need to first determine the total energy usage and then multiply by the Constant Usage rate.

1. **Total usage during 7 a.m. – 7 p.m. (Daytime)**:
- 245 KWH

2. **Total usage during 7 p.m. – 7 a.m. (Nighttime)**:
- 165 KWH

3. **Total usage**:
- Total KWH = 245 KWH + 165 KWH = 410 KWH

4. **Rate for the Constant Usage plan**:
- $0.05324/KWH

5. **Total cost**:
\[
\text{Total cost} = \text{Total KWH} \times \text{Rate} = 410 \, \text{KWH} \times 0.05324 \, \text{USD/KWH}
\]

Doing the multiplication:
\[
\text{Total cost} = 410 \times 0.05324 \approx 21.83 \, \text{USD}
\]

The correct response is **$21.83**.