Posted by **rai** on Saturday, April 17, 2010 at 5:32am.

1)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 2Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places.

2)as a part of pilot project some surgeries at distance have connection at 100 Mbps. how long would it take one of these surgeries to download the same image.

- engineering -
**Damon**, Saturday, April 17, 2010 at 7:00am
8MB/image * 6 images = 48 MB total

48 MB * (1 second/2 MB) = 24 seconds

In part 2 the transmission is 100/2 or 50 times as fast

- did not notice bits to bytes shift -
**Damon**, Saturday, April 17, 2010 at 9:51am
8MB/image * 6 images = 48 MB total

48 MB * (8 Mb/MB) * (1 second/2 Mb) = 192 seconds

In part 2 the transmission is 100/2 or 50 times as fast

- engineering -
**drwls**, Saturday, April 17, 2010 at 10:57am
This looks very much like the question I answered yesterday. That one had no part 2.

http://www.jiskha.com/display.cgi?id=1271466749

I agree with Damon's answer.

- engineering -
**Peter**, Sunday, April 25, 2010 at 7:10am
What is the answer to part two??

- engineering -
**Peter**, Sunday, April 25, 2010 at 7:13am
I mean in Scientific notation?

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