PREP题目: 第一题:这个题目我死活没理解…… before being simplified, the instruction for computing income tax in country R. were to add 2% of one's annual income to the average of 100 units of R's currency and 1% of one's anual income. which of the following represents the simplified formular for computing the income tax, in country R's currency for a person income is I? 答案:50+I/40
第二题 Is m+z>0 ? 1) m-3z>0 2)4z-m>0
第三题 total is $500,000 . cost只有labor 和材料, profit greater than 150,000吗? 1)total钱数是材料钱数的三倍 2)profit>labor费用 答案C
第四题 of 60个动物,2/3 are either pigs or cows, how many cows? 1) the farm has more than twice as many cows as it has pigs 2) the farm has more than 12 pigs 答案C