By the theorem about the probability of two independent events, the probability of winning and both parties of the equal to the work of the probabilities of each event. 0.52*0.3 = 0.156.
The probability of winning one batch of A 0.52, and the second batch is 0.3. Of course, the probability of winning two parties will be less than the probability of each batch, that is, less than 0.3.Our result is 0.156 less than 0.3. That’s right.