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Mathematics, 02.07.2020 03:01 laiahlott

PLEASE HELP! WILL MARK BRAINLIEST! 20 POINTS! The average (mean) of 90 numbers is 60, and the average of 60 numbers is 90. What is the average of all the numbers?

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PLEASE HELP! WILL MARK BRAINLIEST! 20 POINTS! The average (mean) of 90 numbers is 60, and the averag...

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