timothy's average score on the first 4 tests for 76 of the next five test his
average score was 85 what was his average score on all 9 test
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Answer: (76×4 + 85×5)/9 = 81
Step-by-step explanation:
Avg score of 4 subjects = 76
Total score of 4 subjects = 76×4 = 304
Avg score of 5 subjects = 85
Total score of 5 subjects = 85×5 = 425
Total score of 9 subjects = 304+425 = 729
Avg of 9 subjects' score = 729/9 = 81
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