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26 March, 17:49

Jamila babysat nine times. She earned $15, $20, $ 10, $ 12, $20, $16, $80 and $18 for eight babysitting jobs. How much did she earn the ninth time if the mean of the data set is $24?

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  1. 26 March, 21:30
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    15 + 20=35

    35+10 = 45

    45+12=57

    57 + 20=77

    77+16=93

    93+80=173

    173+18=191

    24*9=216

    216-191 = 25
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