Question: Suppose Bob owns 2,000 shares of Company X and 10,000 shares of Company Y. The total value of Bob's holdings of these two companies is $340,000. Suppose Frank owns 8,000 shares of Company X and 6,000 shares of Company Y. The total value of Frank’s holdings of these two companies is $340,000.

a. Write equations for Bob and Frank's holdings. Use the variables X and Y to represent the values of shares of Company X and Company Y.

b. Solve for the value of a share of Company X and Company Y.