As one's income rises(falls), the demand for a product will rise(fall). |
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| Isn't that house beautiful? I would so love to live in a house like that. | |
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| Well, since I just recently got promoted to a much higher salary job, I think I can afford to purchase that house. | |
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| Well then, Iet's try asking if that house is available for sale or not. | |
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| Sure. | |
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