Question

На пошив 9 рубашек ушло 18,9 м ткани. а) Сколько метров ткани уйдет на пошив 12 таких рубашек? б) Сколько рубашек можно пошить из 44,1 м ткани? Заранее спасибо!

Answer 1

Calculation of Fabric Required for Shirt Production

To calculate the amount of fabric required for shirt production, we need to determine the fabric consumption per shirt.

Given information: - 9 shirts required 18.9 meters of fabric.

a) To find out how much fabric is needed for 12 shirts, we can use the concept of proportionality. Since the number of shirts has increased by a factor of 12/9, the amount of fabric required will also increase by the same factor.

Let's calculate the fabric required for 12 shirts: Fabric required for 12 shirts = (Fabric required for 9 shirts) x (12/9)

Substituting the given values: Fabric required for 12 shirts = 18.9 meters x (12/9)

Calculating the result: Fabric required for 12 shirts = 25.2 meters

Therefore, 12 shirts will require 25.2 meters of fabric.

b) To determine the number of shirts that can be made from 44.1 meters of fabric, we can use the concept of proportionality again. Since the amount of fabric available has increased by a factor of 44.1/18.9, the number of shirts that can be made will also increase by the same factor.

Let's calculate the number of shirts that can be made from 44.1 meters of fabric: Number of shirts = (Fabric available) x (9/18.9)

Substituting the given values: Number of shirts = 44.1 meters x (9/18.9)

Calculating the result: Number of shirts = 21 shirts (approximately)

Therefore, 44.1 meters of fabric can be used to make approximately 21 shirts.

Please note that these calculations assume a consistent fabric consumption per shirt and do not account for any wastage or variations in fabric usage during the production process.