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A consumer has a utility function of the form U = 21/x1 + xz. We also know that the price ratio is :21 = 4 and that the available budget is 10, so that hypothetically 10 units of x1 can be purchased. o What does the utility function tell us about how utility changes with respect to increases in the consumption of these goods? 0 Use the Lagrange method to determine the values of x1 and x2 for which utility is maximised 0 Describe how changes in the price can affect utility