Question
After an examination, Jack and his friends calculated their average score. They figured that if Jack could get 16 marks more, they would have an average of 90. However, if Jack's results were 2 marks less, their average would become 87. How many friends did Jack have?
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After an examination, Jack and his friends calculated their average score. They figured that if Jack could get 16 marks more, they would have an average of 90. However, if Jack's results were 2 marks less, their average would become 87. How many friends did Jack have?