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19 November, 12:22

The mean of 10 positive numbers is 16. when another number is added, the mean becomes 18. Find the number added

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  1. 19 November, 12:45
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    The number added was 38.

    Step-by-step explanation:

    (16x10+x) / 11 = 18

    160+x = 198

    x = 38

    Best Regards!
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