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I'm sharing a flat with other 3 people.

The bills have just arrived and now we have to pay them proportionally to the time we stay in the flat.

If I arrived in the middle of the month, and the others have stayed the hole month, how much have to pay each person?

1 Answers 1

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Your times of stay are in proportion to $\frac12$, $1$, $1$ and $1$; the sum of these weights is $\frac72$, so you should pay

$\frac{\frac12}{\frac72}=\frac17\;,\\ \frac{1}{\frac72}=\frac27\;,\\ \frac{1}{\frac72}=\frac27\;,\\ \frac{1}{\frac72}=\frac27\;,\\ $

respectively.

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    @tirengarfio: Ah, sorry, yes, I just read "3 people"; I'll correct it.2012-02-11