1.某公司的雇员有两种(只有两种),PART TIME AND FULL TIME, 其中FULL TIME 的平均工资比PART TIME 的平均工资多$3000, 并且FULL TIME 的平均工资比全体员工的平均工资多$6000, 求FULL TIME 的人数占全体员工的%? 答案从10%到30%不等

2. If M is the least common multiple of 90,196 and 300,which of the following is NOT a factor of M?

a.600

b.700

c.900

d.2100

e.4900

3. Last year the price per share of Stock x increased by k%, and the earnings per share of stock x increased by m%, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m?

答案是 [100(k-m)]/(100+m)%