Rahul Mehta Gandhinagar LsCandidate

A moneylender A loans Rs 20000 to B. The conditions are --
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1. B pays Rs 5000 interest on day one itself. So B gets Rs 15000
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2. B has to pay Rs 100 for next 200 days
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What is annual rate of interest per year?
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PLEASE NOTE THAT PRINCIPAL CHANGES EVERYDAY !!