Question

the average of three number is 25.if the first number is 27 and the second is 21. find the third number. ​

Answer 1

let 3 numbers are a,b, and c .

given ,

first no. a = 27 ,2nd no. b = 21

average of 3 numbers = 25

(a + b + c)/3 = 25

a + b + c = 75

27 + 21 + c = 75

c = 75 - 48 = 27

Answer: third number is 27.

Answer 2

Answer:

Step-by-step explanation:

Let the third Number be x

Therefore, (27 + 21 + x)/3 = 25

48 + x = 75

x = 27