Question

a factory weaves material that mixes cotton and polyester in the ratio 7:3 so how many cotton must they order if they have 24kg of polyester in stock​

Answer 1

Answer:

Given,

Ratio of cotton and polyester is 7:3

Here, x be the common part

Therefore,

Cotton = 7×x = 7x

&

Polyester = 3×x = 3x

A.T.Q,

Polyester = 24 kg

or, 3x = 24

or, x = 24/3

or, x = 8

Therefore,

Cotton = 7×x = 7×8 = 56 kg

Answer :- They ordered 56 kg of cotton if they have 24 kg of polyester.

Answer 2

For 24kg of polyester, they need to order 56kg of cotton.

Step-by-step explanation:

Material = Cotton + Polyester;

Ratio of cotton : polyester = 7:3

Given:

Polyester in stock = 24kg

we assume a variable 'x'.

3x = 24kg

$x = \frac{24}{3}\\ x = 8$

If there is 8times the required amount of polyester, then we need 8 times the original value of cotton.

Cotton = 7x

Cotton = 7*8

Cotton = 56kg