Question
During one test, points were awarded for questions answered as shown.

  Points per question
Correct 8
Wrong - 3 
Missed - 2

The ratio of the questions correctly to questions answered wrongly to questions that were missed out was 9 : 2 : 1. If Joelle was awarded 320 points, how many questions are there in all?
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During one test, points were awarded for questions answered as shown.

  Points per question
Correct 8
Wrong - 3 
Missed - 2

The ratio of the questions correctly to questions answered wrongly to questions that were missed out was 9 : 2 : 1. If Joelle was awarded 320 points, how many questions are there in all?