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

Cecil has a mysterious money machine that will double any amount of money placed in it and add $5.00 to the doubled amount. Yesterday, he placed a certian amount of money in the box, got a new amount, then placed the new amount back in the box. Then he had $51.00. How much money did he first place in the mysterious money machine?

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