The mean of the five number is 25. if the four numbers are 16,26,31,32

1.	The mean of the five number is 25. if the four numbers are 16,26,31,32 ,then find the fifth number
Answer» Answer: 20 Step by step explanation: Given: Mean of five numbers is 25. Four numbers are 16, 26, 31, 32 To find: The fifth NUMBER Solution: Let the fifth number be = X Mean of numbers = $\sf{\frac{Sum\: of\: observations}{Total \: observations}}\\$ Sum of observations = 16 + 26 + 31 + 32 + x = 105 + x Total observations = 5 Mean given = 25 => 25 = (105 + x)/5 => 125 = 105 + x => x = 20 Thus, the missing and fifth number is 20.

The mean of the five number is 25. if the four numbers are 16,26,31,32 ,then find the fifth number

Answer»

Answer: 20

Step by step explanation:

Given:

Mean of five numbers is 25. Four numbers are 16, 26, 31, 32

To find:

The fifth NUMBER

Solution:

Let the fifth number be = X

Mean of numbers = $\sf{\frac{Sum\: of\: observations}{Total \: observations}}\\$

Sum of observations = 16 + 26 + 31 + 32 + x = 105 + x

Total observations = 5

Mean given = 25

=> 25 = (105 + x)/5

=> 125 = 105 + x

=> x = 20

Thus, the missing and fifth number is 20.

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