英文数学应用题
Saidaowned125sharesofanoilcompany.Oneday,thevalueofeachsharedroppedby$0.31.Thenextday,thevalueofeachshareroseby$0.18.WhatwasthetotalchangeinthevalueofSaida'sShares.麻烦把SOLUTION写出来.THANKYOU
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