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23-03-2020
Mathematics

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Andy has an 89 average after 5 social studies tests. He wants to have a 90 average for the marking period. What does he need to score on the 6th test to finish with the 90 average?

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23-03-2020

Answer:

91

Step-by-step explanation:

89+91= 180

180/2 = 90

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