To calculate the expected rate of return for an investment with a beta of 12 and assuming the risk-free rate is not provided, you can use the Capital Asset Pricing Model (CAPM):
Expected Return = Risk-Free Rate + Beta * (Market Rate of Return - Risk-Free Rate)
Let's assume a typical risk-free rate of around 2% for this calculation:
Expected Return = 2% + 12 * (13.0% - 2%)
Expected Return = 2% + 12 * 11%
Expected Return = 2% + 132%
Expected Return = 134%
Rounding to two decimal places, the expected rate of return for the investment with a beta of 12 is 134.00%.