# Server

Calculate how many average minutes the web server is unavailable a year if the availability is 99.9%.

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- equation
**arithmetic**- multiplication
- rounding
**basic functions**- ratio
- percentages
- direct proportionality
**numbers**- rational numbers
- real numbers

### Units of physical quantities:

### Grade of the word problem:

We encourage you to watch this tutorial video on this math problem: video1

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