The “Limited Plan” offers a 15% discount for power usage between 7pm – 9am if most of your usage happens during that time. If not, then you lose your discount and you pay a 20% premium on the usage outside of that time. The cost per kilowatt hour is $0.05432. How much would you have paid in March if you used 450 KWH 7pm – 9am and 465 KWH 9am – 7pm?

Question

The “Limited Plan” offers a 15% discount for power usage between 7pm – 9am if most of your usage happens during that time. If not, then you lose your discount and you pay a 20% premium on the usage outside of that time. The cost per kilowatt hour is $0.05432. How much would you have paid in March if you used 450 KWH 7pm – 9am and 465 KWH 9am – 7pm?

• $49.70
• $51.08 Is my answer correct?
• $54.75
• $42.25

Answer 1

Since usage is greater outside the prescribed period, there will be a 20% premium for those kW-h.

Can you please show us how you got $51.08?

Answer 2

I was told that was the answer and wanted to make sure. Please help with showing how to work it. Thanks,

Answer 3

Question says:

If not, then you lose your discount and you pay a 20% premium on the usage outside of that time.

Check that you have calculated without the 15% discount.

Answer 4

I took the test I don't know what the answer is but $51.08 is not it because I got it wrong

Answer 5

To calculate how much you would have paid in March, we'll need to break down the usage and calculate the cost accordingly.

First, let's calculate the cost for the power usage between 7pm to 9am, which is the time frame that qualifies for a 15% discount. You mentioned using 450 KWH during this time.

The cost per kilowatt-hour is $0.05432, and since you have a 15% discount, you'll only pay 85% of that cost.

The calculation for the cost during 7pm to 9am is:

450 KWH * $0.05432 * 0.85 = $20.78436

Now, let's calculate the cost for the power usage from 9 am to 7 pm, which does not qualify for a discount. You mentioned using 465 KWH during this time.

Since there is no discount for this time range, you'll be charged a 20% premium on the usage outside of 7 pm to 9 am.

The calculation for the cost during 9 am to 7 pm is:

465 KWH * $0.05432 * 1.20 = $31.99104

Now, let's add the cost for both time ranges to get the total cost:

Total cost = Cost during 7 pm to 9 am + Cost during 9 am to 7 pm
Total cost = $20.78436 + $31.99104 = $52.7754

Rounding this to two decimal places, the total cost comes out to be around $52.78.

Comparing this to the options given, none of them exactly match the calculated amount. The closest option is $51.08, so it seems like your answer is not correct.