10) Jake and James received a 15-year mortgage of $300,000 to purchase a condominium. They negotiated...

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10) Jake and James received a 15-year mortgage of $300,000 to purchase a condominium. They negotiated a fixed interest rate of 4% compounded semi-annually for a 5-year term. Their mortgage contract also stated that they could prepay 8% of the original principal every year without an interest penalty. By how much did their amortization period shorten if: (0) They made a prepayment of $30,000 at the end of the first year? They Increase the periodic payment by 20% starting from the 12th payment? (i) 10) Jake and James received a 15-year mortgage of $300,000 to purchase a condominium. They negotiated a fixed interest rate of 4% compounded semi-annually for a 5-year term. Their mortgage contract also stated that they could prepay 8% of the original principal every year without an interest penalty. By how much did their amortization period shorten if: (0) They made a prepayment of $30,000 at the end of the first year? They Increase the periodic payment by 20% starting from the 12th payment? (i)