yossi89 yossi89

19-09-2016
Mathematics

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If mark got 6 questions out of 40 incorrect what percent of the questions did he get correct?

Respuesta :

19-09-2016

So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.

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