Question
Gwen scored 80, 64, 71 and 65 marks for her first four Social Studies tests. She wishes to improve her average mark by 5. How many marks must she score for her next Social Studies test?
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Gwen scored 80, 64, 71 and 65 marks for her first four Social Studies tests. She wishes to improve her average mark by 5. How many marks must she score for her next Social Studies test?