A 15-year, 12% semiannual coupon bond sells for $1,153.72?

A 15-year, 12% semiannual coupon bond sells for $1,153.72.N= 30 PV= -1153.72 PMT=60 PV= 1000 I/YR is 5, but how is the I/YR computed? or:A 15-year, 12

A 15-year, 12% semiannual coupon bond sells for $1,153.72.
N= 30 PV= -1153.72 PMT=60 PV= 1000 I/YR is 5, but how is the I/YR computed?

or:A 15-year, 12% semiannual coupon bond sells for $1,153.72.N= 30 PV= -1153.72 PMT=60 PV= 1000 I/YR is 5, but how is the I/YR computed?

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