In a certain factory, hours worked by each employee in excess of 40 hours per week are overtime hours and are paid for at 1~$1 \over 2$~ times the employee's regular hourly pay rate.

If an employee worked a total of 42 hours last week, how much was the employee's gross pay for the hours worked last week?

(1) The employee's gross pay for overtime hours worked last week was $30.

(2) The employee's gross pay for all hours worked last week was $30 more than for the previous week.


Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT sufficient.

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题目分析：

工作40小时为正常工资，超过40小时支付正常工资的1.5倍。设40小时内的正常工资为x。

（1）  若满足条件1，1.5x*2=30，解得x=10，所以上周总工资为40x+30=430美元

（2）  若满足条件2，上周的总工资比前一周多了30美元，并不能计算出上一周的加班工资具体数字，也不能计算出每小时基本工资和加班工资。

因此，给出条件1即可计算出总工资。

综上所述，本题答案为（A），仅条件1即可说明问题，条件2不行。

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