Question

There are approximately 113 million TVs in the United States. Each uses, on average, 76 W of power and is turned on for 6.3 hours a day. If electrical energy costs 0.089 dollars per kWh, how much money is spent every day in keeping the TVs turned on? Number Units

Answer 1

Answer:

A = $4,815,291.6 approximately $4.8 million

The total amount used to keep 113 million TV turned on per day in the United States is $4,815,291.6

Step-by-step explanation:

Given;

Number of TVs in the United States N = 113 million

Average power per TV P = 76 W

Average TV use per day t = 6.3 hours a day

Cost rate of electrical energy R = 0.089 dollars per kWh

The total amount used to keep 113 million TV turned on is;

A = Total Energy consumption × cost rate

A = Et × R

Total Energy consumption of 113 million TVs with 76W at 6.3 hours a day is

Et = NPt = 113 million × 76 × 6.3 = 54.1044millon kWh

From

A = Et × R

A = 54.1044millon kWh × 0.089 dollars/kWh

A = 4.8152916 million dollars

A = $4.815 million or $4,815,291.6

Answer 2

Answer:

$76 W *\frac{1kW}{1000 W}= 0.076 kW$

$0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}$

$113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh$

And finally we can convert this into money like this:

$54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6$

So they spent every day approximately in total $ 4815291.6 dollars

Step-by-step explanation:

For this case we can convert the average power into Kw like this:

$76 W *\frac{1kW}{1000 W}= 0.076 kW$

Now on average we know that one person use on average this power over 6.3 hours per day so then we have the following consumption rate:

$0.076 kW * 6.3 \frac{hours}{day}= 0.4788 \frac{kWh}{day}$

And now we know the total population so then the total consumption per day would be:

$113x10^6 people * \frac{0.4788 kWh}{people}= 54104400 kWh$

And finally we can convert this into money like this:

$54104400 kWh *\frac{0.089 dollars}{1 kWh}= 4815291.6$

So they spent every day approximately in total $ 4815291.6 dollars