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Math Shack

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Word Problems with Averages

Stat-prob

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The Shmoop Intelligence Agency has charged you with delivering two series of numbers used to defuse a giant mashed potato bomb. You accidentally lost one number from each list, but luckily you remembered that the arithmetic mean for each list is -3.

First list: 7, -19, 6,x
Second list: -7, -2, -1,y

To defuse the bomb, you must input the value xy, the first missing number divided by the second missing number. What is the value of this vital digit?

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