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78%

Think of it this way:

50 is 100% (per cent = "out of 100")

So the first thing you do, is to set up the fraction: 100/50. Thats your "whole"

Then you need to see how many parts out of this 39 makes:

((39*100)/50) = 78

And there you go ;P

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13y ago

What else can I help you with?