The sum of three numbers is

89

. The third number is
3

times the second. The first number is
9

more than the second. What are the numbers?

3 answers

second --- x
first ---- x+9
third ---- 3x

x + x+9 + 3x = 89

carry on
First number is 9, second number is 20, third number is 60
Always check your answers before you post them.

from my equation:
x + x+9 + 3x = 89
5x = 80
x = 16

according to my definitions:
first = 25
second = 16
third = 48

Is their sum equal to 89 ? , YES
Do they fit the given conditions ?, YES

Yours do not fit the original conditions
Your first is NOT 9 greater than your second.