关于effectiveannualrate的美国数学题
Stevenpurchased1000sharesofacertainstockfor$30,000(includingcommissions).Hesoldtheshares2yrlaterandreceived$34,400afterdeductingcommissions.Findtheeffectiveannualrateofreturnonhisinvestmentoverthe2-yrperiod.(Roundyouranswertotwodecimalplaces.)
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