Question

The average of three numbers is 26. the average of two numbers is 32. what is the third number

Answer 1

Hi ,

let a,b,c be three numbers

Given
average = (a+b+c) / 3 = 26

a+b / 2 = 32
a+b = 64

so
a+b+c / 3 = 26
64 + c = 26*3
c = 78 - 64
c = 14

the third number is 14

Hope it helped