Question

A rectangular blue tile has a length of 4.25 inches and a width of 6.75 inches. a similar red tile has a length of 12.75 inches. what is the width of the red tile?

Answer 1

6x6 is 36 but 36 minus 6 is 30 and minus 7.5 from that

And you get 22.5

Answer 2

Cuz the rectangular tiles are similar, so the ratio between their lengths and widths should be the same.
The blue tile's ratio between its length and width is 4.25:6.75=17:27
The red tile's ration between its length and width is 12.75:x which is equal to 17:27, therefore the width of the red tile is 17/12.75*27=36 inches