Answer:
15.18%
Explanation:
Calculation for the nominal annual rate
First step is to find EFF% using this formula
EFF%=[1+(Nominal rate percentage/Numbers of months in a year )]^Numbers of months in a year
Let plug in the formula
EFF%=[1+(15%/12)^12
EFF%=(1+0.0125)^12
EFF%=(1.0125)^12
EFF%=1.1608×100%
EFF%=116.08%
Second step is to find Rnom compounding quarterly of 116.08% using this formula
Rnom compounding quarterly = (1+(R/4)^4
Let plug in the formula
Rnom compounding quarterly= (116.08%)^(1/4) Rnom compounding quarterly= 1+ R/4
Hence,
Rnom compounding quarterly = 15.18%
Therefore Anne Lockwood should quote her customers with Rnom compounding quarterly of 15.18%