Answer
See below.
Work Step by Step
By definition, the expected value is the sum of each outcome multiplied by its probability.
Hence here the expected value for the first site: $0.2\cdot80m+0.8\cdot(-10m)=8m$, the expected value for the second site: $0.1\cdot120m+0.9\cdot(-18m)=-4.2m$. The first site has a higher expected value, by $12.2m$.
