Question

You have a dance class every three days. Today is Monday, and you have dance class. In how many more days will you have dance class on Monday again? Use the LCM to find your answer. Then check your answer using the Calendar show. And what day will you have dance class on Monday again?

Answer 1

7 days in a week, 3 days a rotation.

multiples of 7: 7, 14, 21, 28

multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24

the LCM is 21, because it is the smallest multiple of both numbers. there will be 21 more days until you take dance class on Mondays

Answer 2

Six more days until its Monday next week