Posted by **Leissa** on Tuesday, June 22, 2010 at 8:50am.

A stack of $10 bills is worth $90 billion dollars. What is the height of the stack in kilometers? Assume each bill is .2 millimeters high.

- C. Algebra -
**MathMate**, Tuesday, June 22, 2010 at 9:01am
Number of bills = $10,000,000,000 / $10

= 1,000,000,000

each bill is 0.2mm = 0.0002m = 0.0000002km

Total thickness=1,000,000,000*0.0000002km

=?

(It's a little more than half the distance between New York City and Boston).

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