SOLUTION: An entrance exam is made up of 3parts .Each part has 20 questions. What is the maximum number of questions one can fail and still get an overall 70% average to pass the test ?

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Question 891509: An entrance exam is made up of 3parts .Each part has 20 questions. What is the maximum number of questions one can fail and still get an overall 70% average to pass the test ?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3*20=60
7/10*60=
7*6=42