Answer:
Yadira's mom can purchase 36 hot dogs.
Step-by-step explanation:
After you read the question, you can figure out that we need to find the LCM (least common multiple). To do this, we are going to find the first 5 multiples of 12 and 9.
The first five multiples of 12 are 12, 24, 36, 48, 60.
The first five multiples of 9 are 9, 18, 27, 36, 45.
Now we need to find the least common multiple. So let's find the number that is in both. The number is 36. The answer is 36.