You live in a world with three securities A, B, and C. You are provided with the following risk-return profile for the risky securities. Additionally, the correlation between securities A and B is 0.0, between securities A and C, is 0.0, and between securities B and C is -1.0. Security Expected Returns Standard Deviation A 15% 20% B 10% 25% C 8.0% 18%

What is the implied risk-free rate if there are no arbitrage opportunities?

Carry forward at least four decimal places and report your answer in percentage points up to 2 decimal places (example 4.10).