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How much do I owe my friend?

Mathematics
Tutor: None Selected Time limit: 1 Day

I played $20.00 for my friend on the roulette table and got $40.00 back - how much do i owe my friend?

Mar 28th, 2015

You owe your friend $10 + the principle investment. 

Therefore you owe your friend $30 in total.

You get to keep $10 


Mar 28th, 2015

Thank you :) Use promocode "Joshua S" for more money to ask questions. If you need help ask. 

Mar 28th, 2015

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Mar 28th, 2015
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Mar 28th, 2015
Dec 10th, 2016
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