After some connection at a speed of 3 Kbytes per second for 10 seconds, a file is transferred. Determine the time (in seconds)

After some connection at a speed of 3 Kbytes per second for 10 seconds, a file is transferred. Determine the time (in seconds) to transfer the same file over another connection at a speed of 512 bytes per second.

3 KB / s * 10 = 30 KB.
Now we can determine the time of transfer of this file through another connection:
30 KB / 512 bytes / s = 30 * 1024/512 = 60 seconds.

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