The average of a set of three grades is 85.5% and the average of a different set
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The average of a set of three grades is 85.5% and the average of a different set of four grades is 91%. Determine the average of all seven grades. Round your answer to two decimal places.
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Related Book For 
Mathematics Of Business And Finance
ISBN: 9781927737545
4th Edition
Authors: Larry Daisley, Thambyrajah Kugathasan, Diane Huysmans
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