Question 821034
70% of 80 = 0.70*80 = 56


So you got 56 questions correct.


That means you got 80 - 56 = <font color="red">24</font> questions wrong.


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Alternative Method:


You got 70% correct, so you got 100 - 70 = 30% incorrect.


30% of 80 = 0.30*80 = <font color="red">24</font>