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The average of 6 numbers is 8. One new number is now added to the set of 6 numbers and the arithmetic mean of the

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The average of 6 numbers is 8. One new number is now added to the set of 6 numbers and the arithmetic mean of the

by Vincen » Tue Aug 18, 2020 7:26 am

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The average of 6 numbers is 8. One new number is now added to the set of 6 numbers and the arithmetic mean of the 7 numbers is now calculated. Is the arithmetic mean of 7 numbers greater than 10?

1. The additional number is at least 23.
2. The additional number is a multiple of 4.

Answer: A

Source: e-GMAT
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Source: — Data Sufficiency |
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