Question

Общий вес четырёх детей составляет 83 кг .Толя весит на 10 кг меньше, чем Коля, а Коля весит столько же , сколько две его младших сестры вместе. Сколько кг весит Толя решить задачу

Answer 1

Пусть обе сестры весят Х
тогда и коля весит Х
Толя - Х-10
Составим уравнение х+х+х-10=83
3х=83+10=93
х=31 Вес коли
Толя весит 31-10=21 кг.

Answer 2

Problem Analysis

We are given that the total weight of four children is 83 kg. Tolya weighs 10 kg less than Kolya, and Kolya weighs the same as the combined weight of his two younger sisters. We need to determine Tolya's weight.

Solution

Let's assign variables to the weights of the children: - Let K be the weight of Kolya. - Let T be the weight of Tolya. - Let S1 be the weight of the first younger sister. - Let S2 be the weight of the second younger sister.

From the given information, we can form the following equations: 1. The total weight of the four children is 83 kg: K + T + S1 + S2 = 83. 2. Tolya weighs 10 kg less than Kolya: T = K - 10. 3. Kolya weighs the same as the combined weight of his two younger sisters: K = S1 + S2.

We can solve this system of equations to find the values of T, K, S1, and S2.

Solving the Equations

Let's substitute equation 3 into equation 2 to eliminate K: T = (S1 + S2) - 10.

Now, substitute this expression for T in equation 1: (S1 + S2) - 10 + S1 + S2 = 83.

Simplifying the equation: 2S1 + 2S2 - 10 = 83.

Rearranging the equation: 2S1 + 2S2 = 93.

Dividing both sides of the equation by 2: S1 + S2 = 46.5.

Since the weights of the children are in whole numbers, we can conclude that S1 and S2 are both 23.5 kg. However, this is not possible, as the weights should be in whole numbers. Therefore, there seems to be an error in the given information or the problem statement.

Please double-check the given information and provide the correct weights or any additional information if available.