Question

the ratio of green tiles to purple tiles in the art class mosaic is 5 to 8. if there were 72 purple tiles in the design how many green tiles will there be.

Whats the answer?

Answer 1

Ratio of green tiles to purple tiles = 5:8

Number of purple tiles = 72

Let number of green tiles be x

Now let us break it down

5:8 and x:72 must be in proportion. So equate it.

$\frac{5}{8} = \frac{x}{72}$

Cross multiply

8x = 72 x 5

x = 72 x 5/8

x = 9 x 5 = 45

So there are 45 green tiles.