Ashade of orange paint is made with 5 parts red paint and 15 parts yellow paint. a) what percent of the paint is red? b) what is the simplified ratio of yellow to red paint?

(a) 25%

(b)  3:1

Step-by-step explanation:

A shade of orange paint is made with 5 parts red paint and 15 parts yellow paint.

(a)

Total parts used in making orange paint=(5+15)+20 parts.

     Number of parts of red paint used=5

  Percent of paint is red=

                                      =

                                       =25%

Hence 25% of red paint was used to make orange paint.

(b)

The simplified ratio of yellow to red paint is:

Hence, the ratio is: 3:1.

idk

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!