Amber wants to put tile on the back special for kitchen counter she will need 36 square feet of tile. she will use basic tile that cost $8 per square foot and decorative tiles that cost $20 per square foot how many square feet of each tile should she use so that all overall cost of backsplash will be $10 per square foot?

Amber use 30 feet of basic tiles and 6 feet of decorative tiles.

Step-by-step explanation:

Let x be the foot  of basic tiles and y be the foot of decorative tiles.

Now, according to the question, we have the following equations

Put y=36-x in (2), we get

Hence, Amber use 30 feet of basic tiles and 6 feet of decorative tiles.

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315