SOLUTION: test with 38 questions how many can I miss and still get 80%

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Question 481737: test with 38 questions how many can I miss and still get 80%
Answer by jim_thompson5910(28595) About Me  (Show Source):
You can put this solution on YOUR website!
x%2F38=80%2F100


100x=38%2A80


100x=3040


x=3040%2F100


x=30.4


Round up to get 31. So you need to get 31 questions correct to get an 80%