$\"\"$

A bag placed in $\"\"$ red tiles, $\"\"$ blue tiles, $\"\"$ green tiles, $\"\"$ yellow tiles and $\"\"$ black tiles.

Find the probability of blue tiles.

The total number of tiles are $\"\"$ .

The probability of selecting one tile from the total number of tiles are $\"\"$ .

$\"\"$ .

The probability of selecting one blue tiles are $\"\"$ .

$\"\"$ .

The probabity is $\"\"$ .

$\"\"$ (Substitute $\"\"$ and $\"\"$ )

$\"\"$ .

The probability of blue tiles is $\"\"$ . $\"\"$

The probability of blue tiles is $\"\"$ .