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Assume the demand function for good X can be written as Qd = 80 - 3Px...

Assume the demand function for good X can be written as Qd = 80 - 3Px + 4Py + 10I, where Px = the price of X, Py is the price of Y and I is consumer income. If the price of Y decreases by 2 dollars, what is the change in Px have to be in order to keep the quantity demanded of X unchanged by the change in the price of Y?

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by 2 2-66 to Keep he Qnouh

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