Will upvote all your words put tin to the comment

a dance school has 63 ballet dancers. if 42% of the total number of dancers in the school are ballet dancers, what is the total number of dancers in the school?

Part = 63

Whole = Unknown

Percent = 42%

Plug in the values given in the formula above

63 whole=42100

We are trying to solve for the whole. The whole is your answer. The first step to solving this is to cross multiply 63 by 100.

Then you get your answer.