30 square tiles will be used to cover the floor.
Step-by-step explanation:
Given,
Red tiles to be used = [tex]\frac{6}{10}[/tex]
Total red tiles used = 18
Let,
x be the total tiles used.
6/10 of x = 18
[tex]\frac{6}{10}x=18[/tex]
Multiplying both sides by 10
[tex]10*\frac{6}{10}x=18*10\\6x=180[/tex]
Dividing both sides by 6
[tex]\frac{6x}{6}=\frac{180}{6}\\x=30[/tex]
30 square tiles will be used to cover the floor.
Keywords: fraction, division
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