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13% daily is worse than any loan shark!


Suppose it takes n days, then

38500 = 19000*(1 + 13/100)n= 19000*(1.13)n

So 38500/19000 = 1.13n

ln(38500/19000) = n*ln(1.13)

so that n = ln(38500/19000) / ln(1.13) = 5.78


So 6 days.

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