Answer:
54 and 18
Explanation:
You have the equation x+(1/3)x=72. Solving for x, we get (4/3)x=72. Now multiply both sides by (3/4) and we get x=54. That means our first number is 54. The second number is obtained by finding 72-54, which is 18; 18 is one-third of 54, so we have the correct answers of 54 and 18.