the mean of 4 numbers is 18 what is the sum of the numbers?
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sum of 4 numbers = 4× 18 = 72
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SOLUTION: The average of four numbers is 18. If one of the ... If the average of 4 numbers is 18, then the sum of the 4 numbers has to be 4 times 18. If you subtract 25 from this sum, you will have the sum of the remaining 3 numbers that you can then divide by 3 to find the average of the 3.
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