单选题
单选题 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?
A. $132.00 B. $157.50
C. $161.25 D. $163.00
E. $165.00
【正确答案】 C
【答案解析】在上周六,市场X开业15小时,并且仅有4名出纳员工作,问那一天市场付给m纳员最大的工资量是多少?
问最大可能的工资量,则使工资高的出纳员工作的时间尽可能地长,且任何时候都是2人同时工作,因此应使S和T各工作12小时,R和Q各工作3小时,工资量为:
(5.5+5.5)×12+(5+4.75)×3=161.25
单选题 If Market X is open 96 hours per week,for how many hours last week were two cashiers working at the same time?
A. 49 B. 48 C. 36
D. 24 E. 12
【正确答案】 A
【答案解析】若市场X每周开业96小时,问上一周两个出纳员同时工作的小时数是多少?
出纳员工作总小时数为:
40+32+26+25+22=145
出纳员同时工作的小时数为:
145-96=49小时
单选题 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?
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
【正确答案】 E
【答案解析】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?
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