Respuesta :

Answer:

Step-by-step explanation:

let the national average be x

11/100 * x = 11x/100

25.47 - x = 11x/100

100(25.47-x) = 11x

2547 - 100x = 11x

2547 = 11x + 100x

2547 = 111x

x = 2547/111

x = 22.945945945946

22.95

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