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I neeeed help quickkkk

I neeeed help quickkkk-example-1
User IlyaGulya
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2 Answers

5 votes
Your answer is 20 hours
User Isuru Madusanka
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4.9k points
5 votes

Answer:

20 hours

Explanation:

If your computer can download a movie in 5 hours, then it downloads
(1)/(5) of a movie in 1 hour.

The extra processor in 1 hour, reduces the time down to 5 hours, so it downloads
(1)/(4) of the movie in 1 hour.

The time that the extra processor will spend to download a whole movie added to
(1)/(5) will equal
(1)/(4) .

So our equation is
(1)/(5) + (1)/(x) = (1)/(4).

To simplify this, lets multiply all sides by 20x.


((1)/(5)+(1)/(x) \cdot 20x) = (1)/(4)\cdot20x\\ 4x + 20 = 5x

Now we can simplify this equation.


20 = 5x-4x\\\\20 = x\\x = 20

So the extra processor alone would take 20 hours to download the movie.

Hope this helped!

User Jim Diamond
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5.3k points