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tester [92]
3 years ago
8

The mean of 4 numbers is 21. calculate the sum of the 4 numbers

Mathematics
1 answer:
Ugo [173]3 years ago
8 0

Answer:

84

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count} , then

\frac{sum}{4} = 21 ( multiply both sides by 4 )

sum = 84

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