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A salesman sells two equally priced brands of ice cream, for [#permalink]
30 Nov 2004, 09:55
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A salesman sells two equally priced brands of ice cream, for which he receives a sales commission of 5 percent on one brand and 7 percent on the other. If the salesman sold a total of $10,000 in ice cream and collected $660 in commissions, what fractional part of the total ice cream sold did he sell at the lower commission rate?