But you shouldn't be ashamed of your mistake.  A lot of people get the word problems wrong.

$138 billion over ten years.

$2.5 trillion per year for 10 years is $25 trillion.

$138 billion / $25 trillion = ...?

I leave the calculation as an exercise for the student.

by EveningStarNM on 03/18/2010 09:38:44 PM EST

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