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I can not manage to solve this problem. Any suggestions on how I can solve it.

If in 2006 Pharmacom spent the same dollar amount on administration (administration outgoings) as in 2005, but the total outgoings increased by ten percent, approximately what fraction of the total outgoings in 2006 would administration outgoings represent?

Ans a) 1/2 b) 1/3 c) 1/4 d) 1/10 e) 1/20 Ans(d)

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Just a hint.

Call $a_n$ the administrative expenses in year $n$, $t_n$ the total expenses.

From the question it is given that: $1.1t_{2005}=t_{2006}$ And that:$a_{2005}=a_{2006}$ Ergo: $\frac{a_{2005}}{1.1t_{2005}}=\frac{a_{2006}}{t_{2006}}$ We can read off $\displaystyle\frac{a_{2005}}{t_{2005}}$ from the pie chart.

The question is: find $\displaystyle\frac{a_{2006}}{t_{2006}}$.

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    @Th$a$nks for making it so clear. I get it now. This could also be solved orally.2012-07-28