Probability — practice question

On each day Alexa goes to work, the probabilities that she travels by bus, by train or by car are $0.4$, $0.35$ and $0.25$ respectively. If she goes by bus, the chance that she is late is $0.55$. If she goes by train, the chance that she is late is $0.7$. If she goes by car, the chance that she is late is $x$. For a day chosen at random when Alexa goes to work, the probability that she is not late is $0.48$.