Question

PLEASE HELP ME!! Marie has a math quiz every 12 days and a science quiz every 15 days. Today she has both quizzes. When is the next time that she will have both quizzes on the same day? To answer this question, find the least common multiple of 12 and 15.

Answer 1

Answer: the lowest common multiple of 12 and 15 is 60.

Step-by-step explanation: The multiples of 12 are : 12, 24, 36, 48, 60, 72, and 84. The multiples of 15 are: 15, 30, 45, 60, 75, and 90. So, 60 is a common multiple.