math word problem

Question

To make an international telephone call, you need the code for the country you are calling. The codes for country A, country B, and C are three consecutive integers whose sum is 90. Find the code for each country.

Answer 1

X+X+1+X+2 = 90

 

3x + 3 = 90

 

3x = 87

 

x=29

 

29 . 30. 31