What score does she need on the next test in order to have an average of 90 on her math tests?

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Sally receives the following scores on her math tests: 78, 92, 83, 99. What score does she need on the next test in order to have an average of 90 on her math tests?

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Basic Math na mahalaga sa Civil Service Exam

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After 6 mathematics tests. Gabriel has a mean score of 78. What score does Gabriel need on the next test to raise his average (mean) to 80?

paano po pag- ganito?

kristelrodillassalazar