Question
The average score received by Usha, Joelle, Penelope and Hazel in a recent Science test was 80 marks. Usha and Joelle both got 10x marks each while Penelope got half of Hazel's marks. How many marks did Penelope score for the test? Express your answer in terms of x.
3 m

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The average score received by Usha, Joelle, Penelope and Hazel in a recent Science test was 80 marks. Usha and Joelle both got 10x marks each while Penelope got half of Hazel's marks. How many marks did Penelope score for the test? Express your answer in terms of x.