Portfolio A consists of a 5-year zero-coupon bond with a face value of $2,000 and a 7-year

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Portfolio A consists of a 5-year zero-coupon bond with a face value of $2,000 and a 7-year zero-coupon bond with a face value of $3,000. The current yield on all bonds is 8.00% per annum. (Answer with two decimal digits accuracy) The duration of portfolio A is