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spayn [35]
3 years ago
10

If the mean of 25, 28, a, 30 and 32 is 27, then find the value of a.

Mathematics
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

a = 20

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count}

          = \frac{25+28+a+30+32}{5}  = \frac{115+a}{5}

Then

\frac{115+a}{5} = 27 ( multiply both sides by 5 to clear the fraction )

115 + a = 135 ( subtract 115 from both sides )

a = 20

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