Answer:
24 minutes
Step-by-step explanation:
Look at the lists of multiples and find the first instance of the same number appearing in both lists.
Multiples of 8: 8, 16, 24, 32, 40, ...
Multiples of 12: 12, 24, 36, 48, 60, ...
The first number that appears in both lists is 24, so the answer is 24.
Answer: 24 minutes
