我是大一升二的學生
這次老師發的講義後面附的題目
in a perfect competitive market .a firm figures out that the demand for
s product at the market price elastic of -0.9 in the short run. if that
firm increase the price of that prouct by 20% what the changes of its
sales revenue in the shory run?
想了很久，老師出國沒有回信，想請問各位高手能否教教我? 謝謝
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