Question

стоимость линз в очках составляет 5/8 от полной стоимости очков , а работа по установке линз в оправу - в 5 раз дешевле . какую часть от полной стоимости очков составляет стоимость оправы ?

Answer 1

Calculation of the Frame Cost

To determine the cost of the frame, we need to know that the cost of the lenses in the glasses is 5/8 of the total cost of the glasses, and the cost of installing the lenses in the frame is 5 times cheaper than the total cost of the glasses. Let's denote the total cost of the glasses as C.

The cost of the lenses can be calculated as (5/8)C, and the cost of installing the lenses in the frame is (1/5) * (5/8)C = (1/8)C.

Therefore, the cost of the frame is the difference between the total cost of the glasses and the cost of the lenses and installation, which is:

C - [(5/8)C + (1/8)C] = (2/8)C = (1/4)C

So, the cost of the frame is 1/4 of the total cost of the glasses.

Answer

The cost of the frame in the glasses represents 1/4 of the total cost of the glasses.