The shaded area on the grid represents the part of a rectangular floor where tile has been installed. Each square in the grid has the same dimensions. What percentage of the floor has tile installed?

45%

Step-by-step explanation:

There are 60 square tiles in total

Only 27 of the tiles have been installed

Now you're going to do 27 divided by 60

You're going to get 0.45

Now you're going to convert that decimal into a percentage by multiplying by 100

0.45×100=45

Your answer is 45%

i would say c is the best answer, hope it's right!

good luck! =)

cutie~