Question: A class is given a test with five questions. 25% of the student got all five correct, 40 % got four correct, 10% got three

A class is given a test with five questions. 25% of the student got all five correct, 40 % got four correct, 10% got three correct, 5% got to correct, 15 Percent God one correct, and the remaining student got them all wrong. If there are 40 students in the class, what is the mean mark all the tests

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