QR-PPPlus_the manager of a small business took out two oneye-优快云博客

博客围绕QR - PPPlus的多道数学题展开，涉及人员招聘数量计算、胆固醇含量百分比计算、贷款利息计算、商品成本与数量比、硬币数量比例、函数图像交点值以及直线斜率关系等题目，并给出部分解题注意点。

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35min左右

QR-PPPlus:第301-320题 | Question 9 Of 20

Sixty percent of the people who originally auditioned for parts in a musical were excused, and the rest were asked to audition again. Of those who were asked to audition again, 30 percent, or 18 people, were hired.（注意这半句主干 ） How many people originally auditioned for parts?

QR-PPPlus:第301-320题 | Question 16 Of 20

A certain package of 4 brownies has 18 milligrams of cholesterol per brownie.（这里是每个brownie有18milligrams） The number of milligrams of cholesterol in the package of brownies is what percent less than the number of milligrams of cholesterol in 1 container of Brand K candy?

QR-PPPlus:第301-320题 | Question 17 Of 20

The manager of a small business took out two one-year loans, each for the same principal amount, to be repaid with interest at the end of the year. Loan S had a simple annual interest rate of 5 percent, and loan R had a simple annual interest rate of 6 percent. If the amount（a principal sum and the interest on it） owed for loan S at the end of 9 months was $26,145, what was the amount owed for loan R at the end of 10 months?

注意这里amount有本金

另外注意这个题在算的时候，5%要除以12

QR-PPPlus:第301-320题 | Question 18 Of 20

A hardware store purchased x identical standard flashlights at $5 each and y identical deluxe flashlights at $7 each. The total cost to the store for both types of flashlights was $92. What is the ratio of x to y ?

这个是两种的总花费

24min左右

QR-PPPlus:第281-300题 | Question 13 Of 20

Jena has a jar that contains 8 nickels and 12 dimes and no other coins. If she adds nickels to the jar one at a time until the ratio of the number of nickels to the total number of coins in the jar is 4 to 5, how many nickels must she add?

注意只是数量比，不要考虑价值

QR-PPPlus:第281-300题 | Question 17 Of 20

In the xy-plane, the graph of y=(2x+3)(x-5) crosses the y-axis at the point (0,k). What is the value of k ?

注意这个是让x取0

QR-PPPlus:第281-300题 | Question 13 Of 20

In the xy-plane, line k and line p intersect at 90-degree angles. If the slope of line k is-1/2, what is the slope of line p ?

这个要乘-2才是-1