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The average of 10 numbers is 85. If the numbers 70 and \(78\) are removed from the set of numbers, what is the average of the remaining numbers?

 Jan 19, 2022
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We can say the sum of the 10 numbers in the first set is 85*10=850. Now we subtract 70 and 78 from 850 to get 850-70-78=702. We now divide by 10-2= 8 to get 702/8=87.75. So the new average is 87.75.

 Jan 19, 2022

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