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How many litres of ink do we use in a lifetime?

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Through printing and writing with pens?

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  1. A little bottle of ink is 60 ml.

    I used 1 or the equivalent every 2 months:

    Formula is: 12/2 * 60 ml = 360 ml / year.

    You start writing at 5 years old and stop at 85:

    360 ml /year * 80  =   28800 ml or 29 liters.


  2. About halfway between lots and lots, and oceans.

  3. Alot, however some less than others, eg I mainly use a laser printer, do you class toner as ink?

  4. how long is a piece of string?
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