Question

В трёх коробках всего 358 блокнотов. Найди количество блокнотов в каждой коробке, если известно, что в третьей коробке в 3 раза больше блокнотов, чем во второй коробке, и на 15 блокнотов меньше, чем в первой коробке. Ответ: блокнотов во второй коробке , блокнотов в третьей коробке , блокнотов в первой коробке .

Answer 1

Ответ:

з кор. - х .2 кор -х/3. 1кор. х+15.составим уравнение: х+(х/3)+ (х+15)=358. 3х+х+3х+45=1074 (все умножили на общий знаменатель - 3 ). 7х=1029. х=147.Ответ:1 кор.162, 2 кор.49, 3 кор. -147

Answer 2

Solving for the Number of Notebooks in Each Box

To find the number of notebooks in each box, we can use algebra to set up and solve a system of equations based on the given information.

Let's denote: - the number of notebooks in the first box as x, - the number of notebooks in the second box as y, and - the number of notebooks in the third box as z.

We are given the following information: 1. z = 3y (the number of notebooks in the third box is 3 times the number in the second box) 2. x = z + 15 (the number of notebooks in the first box is 15 more than the number in the third box) 3. x + y + z = 358 (the total number of notebooks in all three boxes is 358)

Solving the System of Equations

Using the given information, we can set up and solve the system of equations to find the values of x, y, and z.

1. From z = 3y, we can substitute z in terms of y in the other equations. 2. Then, we can substitute the value of z into the equation x = z + 15 to solve for x. 3. Finally, we can find the value of y using the equation x + y + z = 358.

Let's solve for the values of x, y, and z.