"Application of linear equations of two variables - increasing income and reducing expenditures" PPT courseware of linear equations of two variables 2

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"Application of linear equations of two variables - increasing income and reducing expenditures" PPT courseware of linear equations of two variables 2

What is the formula for the growth (loss) rate problem?

1. A factory's revenue last year was 200,000 yuan, and this year it increased by 20% compared with last year. Then this year's revenue: _______ million yuan. If it decreased by 20%, then this year's revenue: _______ million yuan,

2. A factory’s revenue last year was 200,000 yuan. This year it increased by

3. A factory’s revenue in 2005 was 300,000 yuan, and it will grow at a rate of 10% every year. Then its revenue by the end of 2007 will be: ( ) million yuan

4. A factory’s revenue in 2005 was 300,000 yuan, and it will grow at a rate of

A factory's profit (total output value - total expenditure) last year was 2 million yuan. This year's total output value increased by 20% compared with last year, and total expenditure decreased by 10% compared with last year. This year's profit was 7.8 million yuan. Last year's total output value, total How many thousand yuan are the expenses?

Practice in class

1. There are 100 students in Classes 1 and 2, and their sports compliance rate (percentage of meeting the standard) is 81. If the sports compliance rate of students in Class 1 is 87.5, and the sports compliance rate of students in Class 2 is 75, then How many students are there in classes one and two?

Assume that the students in Class 1 and Class 2 are named x and y respectively. Fill in the table below and find the values ​​of x and y.

2. Two people A and B are walking towards each other from a place 36 kilometers apart. If A walks 2 hours ahead of B, then they meet 2.5 hours after B sets off; if B walks 2 hours ahead of A, then they meet at A and B meet each other 3 hours after they set off. How many kilometers did A and B each travel per hour?

Suppose two people A and B walk x kilometers and y kilometers respectively every time. Fill in the following table and find the values ​​of x and y.

Lesson Summary

In this lesson, we use lists to analyze the quantitative relationships contained in specific problems, so that the equality relationships in the questions can clearly emerge. At the same time, we can solve the problem by solving a system of linear equations in two variables and improve the system of linear equations. skills.

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"Application of linear equations of two variables - increasing income and reducing expenditure" PPT courseware of linear equations of two variables 4:

"Application of Binary Linear Equations to Increase Revenue and Reduce Expenditures" Application of Binary Linear Equations PPT Courseware 4 Pre-class Introduction 1. The total output value of a factory last year was x million yuan. This year's total output value increased by 20% compared with last year. Then this year's total output value It is __________ ten thousand yuan; 2. If the total amount of the factory last year...

"Application of linear equations of two variables - increasing income and reducing expenditure" PPT courseware of linear equations of two variables 3:

"Application of binary linear equations to increase revenue and reduce expenditure" Application of binary linear equations PPT courseware 3 Don't forget: growth part = original total growth rate 1. The total output value of a factory last year was x million yuan. This year's total output value is higher than last year With an increase of 20%, the total output value this year is __________ million..

"Application of linear equations of two variables - increasing income and reducing expenditure" PPT courseware of linear equations of two variables:

"Application of binary linear equations to increase revenue and reduce expenditure" Application of binary linear equations PPT courseware Fill in 1. The total output value of a factory last year was x million yuan. This year's total output value increased by 20% compared with last year. Then this year's total output value is __________ ten thousand yuan; 2. If the total expenditure of the factory last year...

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Update Time: 2024-12-04

This template belongs to Mathematics courseware Beijing Normal University eighth grade first volume mathematics industry PPT template

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