Question
The average score received by Lucy, Dana, Linda and Xuan in a recent Mathematics test was 91 marks. Lucy and Dana both got 11f marks each while Linda got half of Xuan's marks. How many marks did Linda score for the test? Express your answer in terms of f.
3 m

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The average score received by Lucy, Dana, Linda and Xuan in a recent Mathematics test was 91 marks. Lucy and Dana both got 11f marks each while Linda got half of Xuan's marks. How many marks did Linda score for the test? Express your answer in terms of f.