Anonymous
Anonymous asked in Science & MathematicsMathematics · 3 weeks ago

Math Exercise?

A set of 10 positive numbers is combined with another set of 12 positive numbers. If the mean of the first set is 16, what is the third smallest possible mean of the second set so that the average of the combined set is an integer?

1 Answer

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  • alex
    Lv 7
    3 weeks ago

    Is the mean of the 2nd set  an integer ?

    Hint

    x = mean of the 2nd set

    12x+160=22k 

    or

    6x=11k-80 , with k = 8 ,9,10,...

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