A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 100Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places using scientific notation.

Question

drwls · Answer

The number of binary BITS of information in six images is 6*8*10^6 bits = 48*10^6.
The "8" factor is the number of bits per byte.

Divide that by the data rate of 10^8 bits/s for the answer in seconds.

I assume you can do the scientific notation etc.

Peter · Answer

To be honest I can make sense of that bit you pointed out. It’s actually the scientific notation bit I struggle with. The answer is 3.84 seconds, however how do you get the answer in seconds, to two decimal places using scientific notation??

Thanks,
Peter.