Stock $R$ has a beta of $2\mathrm{.}5,$ Stock $S$ has a beta of $0\mathrm{.}55,$ the required return on an average stock is $13\%,$ and the risk$-$free rate of return is $3\%.$ By how much does the

required return on the riskier stock exceed the required return on the less risky stock? Round your answer to two decimal places.

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