Question
The average score received by Dana, Nicole, Usha and Wendy in a recent History test was 77 marks. Dana and Nicole both got 10v marks each while Usha got half of Wendy's marks. How many marks did Usha score for the test? Express your answer in terms of v.
3 m

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The average score received by Dana, Nicole, Usha and Wendy in a recent History test was 77 marks. Dana and Nicole both got 10v marks each while Usha got half of Wendy's marks. How many marks did Usha score for the test? Express your answer in terms of v.