Question
Joelle scored 95, 78, 78 and 69 marks for her first four Mathematics tests. She wishes to improve her average mark by 2. How many marks must she score for her next Mathematics test?
2 m

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Joelle scored 95, 78, 78 and 69 marks for her first four Mathematics tests. She wishes to improve her average mark by 2. How many marks must she score for her next Mathematics test?