An investor is looking at two projects, project A and B$.$ Project A pays $$24,000$ with prob. $0\mathrm{.}6$ and $$50,000$ with prob. $0\mathrm{.}4,$ while project B pays $$15,000$ with prob. $0\mathrm{.}5$ and $X with prob. $0\mathrm{.}5.$ If the two projects have the same expected value, what is X$?$