The number of square tiles uses is 30.
Given
Barbara is tiling her craft room with square tiles.
She wants 6/10 of the square tiles to be red.
What is the unitary method?
The unitary method is generally a way of finding out the solution of a problem by initially finding out the value of a single unit, and then finding out the essential value by multiplying the single unit value.
Let, the number of square tiles uses be x.
She wants 6/10 of the square tiles to be red.
Then,
If she uses 18 red tiles the number of square tiles used is,
\(\rm \dfrac{18}{x} = \dfrac{6}{10}\\\\18 \times 10 = x\times 6\\\\180=6x\\\\x = \dfrac{180}{6}\\\\x=30\)
Hence, the number of square tiles uses is 30.
To know more about the Unitary method click the link given below.
https://brainly.com/question/24413062
