Question

Вес мальчика составлял 1/11 веса всего класса. После того как мальчик похудел на 6 килограммов, его вес стал составлять 1/13 веса всего класса. Сколько изначально весил весь класс?​

Answer 1

Ответ:

429 кг

Пошаговое объяснение:

x=1/11y;

x-6=1/13y;

1/11y-6=1/13y

2/143y=6

y=429

Answer 2

Ответ:

134

Пошаговое объяснение:

патамушта

Answer 3

Problem Analysis

We are given that the weight of a boy initially constituted 1/11 of the weight of the entire class. After losing 6 kilograms, the boy's weight became 1/13 of the weight of the entire class. We need to determine the initial weight of the entire class.

Solution

Let's assume the initial weight of the entire class is represented by x kilograms. According to the given information, the weight of the boy initially constituted 1/11 of the weight of the entire class, so we can write the equation:

Boy's initial weight = (1/11) * x

After losing 6 kilograms, the boy's weight became 1/13 of the weight of the entire class, so we can write another equation:

Boy's weight after losing 6 kilograms = (1/13) * (x - 6)

To find the initial weight of the entire class, we need to solve these two equations simultaneously.

Let's solve the equations:

(1/11) * x = (1/13) * (x - 6)

To eliminate the fractions, we can multiply both sides of the equation by the least common multiple (LCM) of 11 and 13, which is 143:

143 * (1/11) * x = 143 * (1/13) * (x - 6)

Simplifying the equation:

13x = 11(x - 6)

Expanding the equation:

13x = 11x - 66

Bringing like terms together:

13x - 11x = -66

Simplifying:

2x = -66

Dividing both sides by 2:

x = -33

Since the weight of the class cannot be negative, we can conclude that there is an error in the given information or the problem statement.

Therefore, it is not possible to determine the initial weight of the entire class based on the given information.

Please note that the given information does not provide enough details to solve the problem.