Respuesta :
Answer:
$1.5
Step-by-step explanation:
Lets us first calculate energy consumed by TV in 30 days.
Energy consumed by TV in one hour : 250 watts.
TV operated 2 hours a day
so energy consumer by TV in a day = 250 * 2 watts = 500 watts hour
Energy consumed by TV in 30 day = energy consumer by TV in a day * 30
= 500*30 watts = 15,000 watt-hour
Convert total energy consumed in kilo watt hour
we know that one kilowatt hour = 1000 watt-hour
Thus, 15,000 watt-hour = 15,000/1000 kilowatt-hour = 15 kilowatt-hour
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cost of electricity = 10 cents per kilowatt-hour
cost of electricity for 15 kilowatt-hour = 15* cost of electricity for one kilowatt-hour( which is 10 cents)
=>15*10 = 150 cents
As $1 = 100 cents
hence 150 cents = $150/100 = $1.5 .
Thus, it cost $1.5 to to operate for a month of 30 days.
The total cost to operate Lee's TV for a month of 30 days is 150 cents and this can be determined by using the given data.
Given :
- Lee watches TV for 2 hours per day. During that time, the TV consumes 250 watts per hour.
- Electricity costs (10 cents)/(1 kilowatt-hour).
The following steps can be used in order to determine the total cost to operate Lee's TV for a month of 30 days:
Step 1 - The arithmetic operations can be used in order to determine the total cost to operate Lee's TV for a month of 30 days.
Step 2 - According to the given data, Lee watches TV for 2 hours per day. So, the total consumption of electricity in one day is 500 watts.
Step 3 - So, the total consumption of electricity in 30 days is 15000 watts.
Step 4 - According to the given data, 1 kilowatt cost 10 cents. So, let the cost of the 15 kilowatts be 'x'.
Step 5 - So, the value of 'x' can be calculated as:
[tex]x = 15\times 10[/tex]
[tex]x = 150 \; {\rm cents}[/tex]
So, the total cost to operate Lee's TV for a month of 30 days is 150 cents.
For more information, refer to the link given below:
https://brainly.com/question/2564656
