Respuesta :

justicehall2002

If 120 teachers is 30%, set an equal proportion to find the total amount.

[tex]\frac{120}{x}[/tex] = [tex]\frac{30}{100}[/tex]; cross multiply to get 120*100 = 30x; multiply

12000 = 30x; divide both sides by 30

400 = x or 400 teachers total

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