What are Jimmys and Zendas expected utilities from a bet that gives them a 50 percent chance

Question:

What are Jimmy’s and Zenda’s expected utilities from a bet that gives them a 50 percent chance of having a wealth of $600 and a 50 percent chance of having nothing? Zenda's Jimmy's utility Wealth utility 10 200 512 200 300 640 300 350 672 400 375 678 500 387 681 600 683 393 396 700 68