Question
Tiffany scored 99, 61, 75 and 65 marks for her first four Social Studies tests. She wishes to improve her average mark by 2. How many marks must she score for her next Social Studies test?
2 m

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Tiffany scored 99, 61, 75 and 65 marks for her first four Social Studies tests. She wishes to improve her average mark by 2. How many marks must she score for her next Social Studies test?