The sum of the digit's of a two digit number is 9. The number is 12 times the ten's digit. How do you find the number?
1 Answer
May 18, 2018
36
Explanation:
"the number is 12 times the ten's digit" so the number must be a multiple of 12
listing out 2-digit multiples of 12 gives us
12
24
36
48
60
72
84
96
there is only one number where the digits add up to 9 AND the entire number is 12 times the tens digit, and that's
