Question

100pts

The sum of the digits of a 3-digit number is 18. The second digit is twice the first digit, and the third digit is three times the first digit. Find the number.

Answer 1

Answer: 369.

Explanation:

We need to do trial and error to do this.

I'm going to try 3 because I know 4 is too high.

3, 6, and 9.

3 + 6 is 9.

9 + 9 is 18.

This means that the answer is 369.