how many weeks would it take gabe to pay his dad back with the doubling payback?

Mathematics
Tutor: None Selected Time limit: 1 Day

on the first day he owes dad $.1, on the second day $.02, and on the third day $.04, and so on for 14 days. How many weeks would it take Gabe to pay his dad back with the doubling payback?

Aug 14th, 2014

in order to pay back double the amount, it would take 15 days..........

Aug 14th, 2014

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Aug 14th, 2014
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Aug 14th, 2014
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