2. 外语
  3. On Saturday of last week, Market X was open for 15 hours and exactly four cashiers worked. What was the greatest possible amount

On Saturday of last week, Market X was open for 15 hours and exactly four cashiers worked. What was the greatest possible amount

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问题 On Saturday of last week, Market X was open for 15 hours and exactly four cashiers worked. What was the greatest possible amount that the market could have paid in cashiers’ wages for that day?  
If Cashier S’s hourly wage were to increase by 10 percent and S’s weekly hours were to decrease by 10 percent from last week’s total hours, what would be the change, if any, in S’s total weekly wage?
选项 A、An increase of $ 1.3
B、An increase of $0.55
C、No change
D、A decrease of $0.55
E、A decrease of $1.37
答案E
解析 若出纳员S的每小时工资增长10％，并且S每周的工作小时数比上一周的总数下降10％，若S的每周总工资有所变化的话，问其变化是多少?
解：本题的正确答案为(E)。S上周的每小时工资为$5.5/小时，则增长后的工资为5.5×(1+10%)=6.05；而S工作小时数比上周下降10％则S共工作了：25×(1-10％)=22.5；则S总工资为：22.5×6.05=136.125；所以工资的变化为：5.5×25-136.125=1.375。
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