Error on Q24 morning mock 2012

This must be an error : the explaination got it that expected return is 12% but my eyes and the calculator see the formula in their answer = 14%

2+ 1,2.(12-10)=12, really?

This has been bought up countless times on previous posts…CFA appears to be aware as they have Q24 in the errata to accompany the CFA mocks on their website.