# How to find the minimum cost? Thanks!

##### 1 Answer

Jun 19, 2018

30 large tiles for $135

#### Explanation:

Let's first look at the cost of each tile per area covered.

Small tiles, 4x4,

Large tiles, 6x12,

And so we want to use as many large tiles as possible to cover the most area possible.

The mosaic must be at least 3 feet tall (36 inches) and 5 feet wide (60 inches).

Using large tiles, let's see how many we need to reach the proper height:

And let's see how many large tiles we need to achieve the proper width:

And so to cover the entire area, we need:

This will cost: