5.3-7. The distributions of incomes in two cities follow the two Pareto-type pdfs
$$
f(x)=\frac{2}{x^3}, 1 < x < \infty , \text { and } g(y)= \frac{3}{y^4} ,  \quad 1 < y < \infty,
$$
respectively. Here one unit represents $\$ 20,000$. One person with income is selected at random from each city. Let $X$ and $Y$ be their respective incomes. Compute $P(X < Y)$.
0.4