求教Prep数学

annappear

Before being simplified, the instructions fro computing income tax in Country R were to add 2percent of one’s annual income to the average(arithmetic mean)of 100 units of Country R’s currency and 1 percent of one’s annual income. Which of the following represents the simplified formula for computing the income tax, in Country R’s currency, for a person in that country whose annual income is I?

50+I/200

50+3I/100

50+I/40

100+I/50

100+3I/100

 

Each employee of Company Z is an employee of either Division X or Division Y, but not both. If each division has some part-time employees, is the ration of the number of full-time employees to the number of part-time employees greater for Division X than for Company Z?

(1) the ratio of the number of full-time employees to the number of part-time employees is less for Division Y than for Company Z

(2) more than half the full-time employees of Company Z are employees of Division X, and more than half of the part-time of Company Z are employees of Division Y

d

帮忙看下这两题吧