Its a random walk question. Suppose we start from x=0. The probability of moving to the right is 0.4, and the probability of moving to the left is 0....

Its a random walk question. Suppose we start from x=0. The probability of moving to the right is 0.4, and the probability of moving to the left is 0.6. If we walk to x=-15, we will instantaneously bounce back to x=0. What is the probability that we will ever reach x=30 at some point? (Waiting time T < infinity)