Question

The diagram shows 2 identical large square tiles and 3 identical small square tiles. Find the length of each of the small tiles. (IMG INCLUDED)

Answer 1

where is the image?

Answer 2

lets call side length of big square B
and little square L

[1] 2B+L=30
[2] B+L=19

[1] - [2] B = 11

sub into [2]

(11)+L=19
L = 8

Answer 3

so let the side of small square = x
side of big square = y

according to the drawing...

y+ y + x = 30
x + y = 19

x + 2y = 30
x + y = 19

can you see something familiar?