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AlgebraicAardvark

So, the question is 63 is 30% of what number?

That can translate to the equation

     63 = 30% · x     or     63 = 0.3x

Divide by 0.3 and you get x = 210.

There are 210 students in band.

goldbergs27

Answer:

210 students

Step-by-step explanation:

210 x (3/10) = 63