Question

. Мама сварила тефтели. Карлсон съел две трети тефтелей. Потом Малыш съел две трети того, что осталось. В результате осталось 3 тефтели. Сколько тефтелей сварила мама?

Answer 1

7 тефтелей всего сварила мама

Answer 2

Problem Analysis

To solve this problem, we need to determine the total number of meatballs (teftel) that the mother cooked. We know that Carlson ate two-thirds of the meatballs, and then the Kid ate two-thirds of what was left, leaving three meatballs. We can use this information to calculate the total number of meatballs the mother cooked.

Solution

Let's denote the total number of meatballs the mother cooked as M.

Carlson ate two-thirds of the meatballs, leaving one-third of the meatballs. This can be represented as: M - (2/3)M = (1/3)M

Then, the Kid ate two-thirds of what was left, leaving three meatballs. This can be represented as: (1/3)M - (2/3)(1/3)M = 3

Now, we can solve for M using these equations.

Calculation

1. M - (2/3)M = (1/3)M 2. (1/3)M - (2/3)(1/3)M = 3 Let's solve these equations to find the value of M.

Result

Solving the equations, we find that the total number of meatballs the mother cooked, M, is 27.

So, the mother cooked 27 meatballs.

Feel free to ask if you have any more questions or need further assistance!