Respuesta :

Answer:

Step-by-step explanation:

Lets try an example

100 / 200

converts to

(100 - 10 )/(200 - 100)

= 90 /100.

So 1/2 increases to 9/10

% increase = [(9/10 - 1/2) / 1/2] * 100

= 80%.

                   

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