Question

Рубашка вдвое дороже футболки брюки на 90 рублей дороже рубашки а юбка на 30 рублей дешевли брюк сколько стоит рубашка? Сколько брюки? Сколько юбка? Помогите пожалуйста

Answer 1

1)90 * 2=180 ( руб. ) - стоимость рубашки. 
2)180+90=270 ( руб. ) - стоимость брюк.
3) 270-30=240 (руб. ) - стоимость юбки.
Ответ : 180 рублей , 270 рублей , 240 рублей.

Answer 2

Calculation of Prices

To determine the prices of the shirt, pants, and skirt, let's assign variables to each item: - Let x represent the price of the shirt. - Let y represent the price of the pants. - Let z represent the price of the skirt.

Based on the given information, we can establish the following equations:

1. "The shirt is twice as expensive as the t-shirt": - x = 2y.

2. "The pants are 90 rubles more expensive than the shirt": - y = x + 90.

3. "The skirt is 30 rubles cheaper than the pants": - z = y - 30.

Solving the Equations

To find the prices of the shirt, pants, and skirt, we can solve the system of equations.

Substituting equation 1 into equation 2, we have: - 2y = x + 90.

Substituting equation 1 into equation 3, we have: - z = (2y) - 30.

Now, let's solve the system of equations:

Substituting equation 1 into equation 2: - 2y = 2y + 90.

This equation is not possible, as it leads to a contradiction. Therefore, there is no unique solution to the given system of equations.

Without additional information or constraints, we cannot determine the exact prices of the shirt, pants, and skirt.

Please provide more information or constraints if available, so we can assist you further.