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What is the present worth of the total 20 payments, occurring at the end of every four months (i. the first payment is in four months), which are...
What is the present worth of the total 20 payments, occurring at the end of every four months (i.e. the first payment is in four months), which are $400, $500, $600, increasing by a fixed sum. Interest is 12% nominal per year, compounded monthly