Question

Брюки дороже рубашки на 30%. Какую долю от стоимости брюк составляет стоимость рубашки?

Answer 1

Если брюки дороже рубашки на 30%, значит, они дороже рубашки в 1,3 раза. Доля стоимости рубашки от стоимости брюк составляет: 1/1,3, или 10/13. Ответ: 10/13.

Answer 2

Calculation of the Cost Ratio between Pants and Shirt

To calculate the cost ratio between pants and a shirt, we need to consider that the pants are 30% more expensive than the shirt. Let's assume the cost of the shirt is x.

According to the given information, the pants are 30% more expensive than the shirt. This means the cost of the pants is equal to the cost of the shirt plus 30% of the cost of the shirt. Mathematically, we can express this as:

Cost of Pants = Cost of Shirt + 30% of Cost of Shirt

Simplifying this equation, we have:

Cost of Pants = Cost of Shirt + 0.3 * Cost of Shirt

Combining like terms, we get:

Cost of Pants = 1.3 * Cost of Shirt

Now, we can calculate the cost ratio between the pants and the shirt. The cost ratio is the ratio of the cost of the pants to the cost of the shirt. Mathematically, we can express this as:

Cost Ratio = (Cost of Pants) / (Cost of Shirt)

Substituting the value we derived for the cost of the pants, we have:

Cost Ratio = (1.3 * Cost of Shirt) / (Cost of Shirt)

Simplifying this equation, we get:

Cost Ratio = 1.3

Therefore, the cost of the pants is 1.3 times the cost of the shirt.