Question

The sum of three consecutive numbers is 87. find the average of the greatest and smallest numbers​

Answer 1

29

Explanation:

let x = the 1st number

x + x+1 + x+ 2 = 87

3x + 3 =87

3x = 84

x = 28

28 is the first number

29 is the second number

30 is the third number

find the average of the greatest and smallest numbers​?

(30 + 28)/2 = 29