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December 21, 2014

December 21, 2014

Posted by **Miranda** on Tuesday, February 12, 2008 at 8:19pm.

- math -
**Guido**, Tuesday, February 12, 2008 at 8:27pmMachine will:

*double any amount placed inside

*add $5 to the amount that is doubled

*a total of $51 was the end result

Let x = how much money he first placed in the box.

Let 2x = the double amount

2x + 5 = 51

2x = 51 - 5

2x = 46

x = 46/2

x = $23

Done!

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