Question

Ребята помогите. Прошу решить вопрос начальной школы, без Х и уравнений. Если около каждого дома посадить по 9 саженцев, то не хватит 100 саженцев, а если по 5 саженцев то 20 саженцев останется. сколько домов? сколькосаженцев?

Answer 1

1) 9-5=4 саженца - во втором случае возле каждого дома посадили на 4 саженца меньше.
2) 100+20=120 саженцев - во втором случае посадили на 120 саженцев меньше чем в первом.
3) 120:4=30 домов было всего.
4) 30*5+20=150+20=170 саженцев было всего.

Ответ: домов 30, саженцев 170

Answer 2

Problem Analysis

To solve this problem, we need to find the number of houses and the number of seedlings. We are given two scenarios: 1. If 9 seedlings are planted around each house, there are 100 seedlings short. 2. If 5 seedlings are planted around each house, there are 20 seedlings remaining.

Let's assume the number of houses is x and the number of seedlings is y. We can set up the following equations based on the given information:

Equation 1: 9x + 100 = y Equation 2: 5x + 20 = y

We can solve these equations to find the values of x and y.

Solution

To find the number of houses and seedlings, we can solve the system of equations:

Equation 1: 9x + 100 = y Equation 2: 5x + 20 = y

Let's solve these equations:

Subtract Equation 2 from Equation 1: 9x + 100 - (5x + 20) = y - y 4x + 80 = 0

Simplify: 4x = -80 x = -20

Substitute the value of x into Equation 2 to find y: 5(-20) + 20 = y -100 + 20 = y y = -80

Since the number of houses and seedlings cannot be negative, we can conclude that there is no solution to this problem based on the given information.

Conclusion

Based on the given information, it is not possible to determine the number of houses and seedlings. The equations do not have a valid solution. It is likely that there is missing or incorrect information in the problem statement. If you have any additional information or clarification, please provide it so that we can assist you further.