Question
The average score received by Fanny, Wendy, Cindy and Rachel in a recent Chinese test was 85 marks. Fanny and Wendy both got 10f marks each while Cindy got half of Rachel's marks. How many marks did Cindy score for the test? Express your answer in terms of f.
3 m

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The average score received by Fanny, Wendy, Cindy and Rachel in a recent Chinese test was 85 marks. Fanny and Wendy both got 10f marks each while Cindy got half of Rachel's marks. How many marks did Cindy score for the test? Express your answer in terms of f.