How to learn the application problem of fractional division in grade six? Please, I'm very anxious about the midterm exam tomorrow (I want the level of the first volume of the sixth grade).

1. Last month, our family spent 1/3 of your mother's total salary and saved 1600. How much salary did you get last month?

2. Read story books in winter and winter. On the first day, I read13 books, and on the second day I read 3/7 books. I read 80 pages in two days. How many pages does this story book have?

3. The store bought a batch of drinks, including 25 cases of coke, 24 bottles in each case, accounting for 2/5 of the total number of drinks, and soda water accounting for 3/50 of the total number of drinks. How many bottles of soda are there?

No company has many foreign employees. Among these foreign employees, 2/7 are female employees and 20 are male employees, which is equivalent to 4/5 of all male employees. It is also known that China employees account for 9/23 of all employees in the company. Excuse me:

(1) How many foreign female employees are there in this company?

(2) How many female employees are there in this company?

answer

1600/(1-1/3) = 2400 yuan.

80/( 1/3+3/7) = 105 page

25 * 24/2/5 * 3/50 = 90 bottles

(1) Total number of foreign employees: 20/( 1-2/7) = 28.

Number of foreign female employees: 28 * 2/7 = 8.

(2) Total number of male employees: 20/(4/5) = 25.

Number of employees in the company: 28/( 1-9/23) = 46.

Total number of female employees: 46-25 = 2 1.

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