The famous Italian race driver Benzino Gasolini uses model A cars 50% of the time, model B cars 30% of the time and model C cars 20% of the time. Based on past races, he won 0.4 of the races when he was driving model A., 0.33 of the races when he was driving model B, and 0.1 of the races when he was driving model C. What is the probability that Benzino will win a race?