How many seconds will it take for a modem transmitting messages at 128,000 bps to transmit a 292KB message?

Let’s convert bits per second to kilobytes per second, dividing first by 8, and then by 1024
128000/8 = 16000 bytes per seconds
16000/1024 = 15.625 kilobytes per second.
Next, to find the time, divide the file size by the transfer rate
292 / 15.625 = 18.688 seconds



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