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.

##### 考题讲解

（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。