*smooch* (ldy) wrote,
*smooch*
ldy

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Am I missing something?

Okies, I know somebody here can help me.

I'm trying to figure out the cost/KB for a T1 line that moves 1.544 megabits/second, and costs $18,000/year.

These are my calculations-- they appear to be wrong.

What am I missing?

The facts:
1Byte = 8Bits
Kb=1024 bits
KB=1024 bytes
Mb=1,000,000 bits (why they made that one different, I don't know)
MB=1024 KB, or 1,048,576 bytes
Cost/year = $18,000
Rate/second = 1.544 Mb
seconds/year = 31,536,000

The figures:

Figure-- cost per KB

1.544 Mb/s = 1,544,000 bits/s

1,544,000 b/s / 8 = 193,000 Bytes/s

193,000 B/s / 1024 = 188.4765625 KB/s

188.4765625 KB/s * 31,536,000 seconds = 5943796875 KB/y

18,000 (cost/yr) / 5943796875 (KB/y) =

3.02836728416968320439113256204604e-6

Or, alternately,

Cost per second:
18,000 / 31,536,000 = 5.70776255707762557077625570776256e-4

Cost/s / KB/s = 3.02836728416968320439113256204604e-6


Thanks for your kind indulgence ^_^
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