Urgent needed at a birthday party there are three types of costume. superheroes, princesses and celebrities. the ratio of superheros to princesses is 5: 4 and the ratio of princesses to celebraties is 3: 1 in total there are 93 costumes, how many people are dressed as princesses?

"ratio of princesses to celebrities is 3:1"

The are 3 more times princesses as celebrities.

"The ratio of superheros to princesses is 5:4"

For each 4 princesses, there are 5 superheroes.

For 1 celebrity, there are 3 pincesses.

For 4 celebrities, there are 12 princesses.
For 12 princesses, there are 15 superheroes.

The ratio of celebrities to princesses to superheroes is
4:12:15 or 4x:12x:15x

Add them: 4x + 12x + 15x = 31x

31x = 93

x = 93/31 = 3

Celebrities: 4x = 4(3) = 12
Princesses: 12x = 12(3) = 36
Superheroes: 15x = 15(3) = 45