Question

So in my math homework lesson today we are learning “Solve One-Step Problems”. I don’t completely understand how to do it. I was given an example to try, but again I don’t know how. So if somebody could give me an explanation on this (not the answer please just the explanation).
How long will it take to download a 400.6 MB file if the transfer rate is 25.2 MB/s? Round your answer to the nearest tenth.

If somebody can explain step by step, that would be great!

Answer 1

Answer:

Step-by-step explanation:

So, in this problem, we're given the size of the of the file. We are also given the rate of change of the amount-downloaded function.

Notice how the transfer rate is in units of time (25.2 MB/s means 25.2 MB per second).

If we want to calculate how long it'll take to download the entire file, we have to divide the file size by the amount of the MB downloaded in one second. (This is assuming the download rate is constant, in the case it isn't constant, you would use calculus) This will find the total number of seconds needed to download the entire file.

We're essentially solving for t in the equation

$400.6 = 25.2t$

$t = \frac{400.6}{25.2} = \frac{2003}{126} = 15.897$