Question

Clarissa goes to soccer practice every 7 days and dance lessons every 3 days. If she attended both today, in how many days will she have to attend both again?

A. 21 days
B. 6 days
C. 14 days
D. 42 days

Answer 1

Clarissa will have to attend both soccer practice and dance lessons again in 21 days.

Step-by-step explanation:

To determine when Clarissa will have to attend both soccer practice and dance lessons again, we need to find the least common multiple (LCM) of 7 and 3, which represents the number of days it will take for both schedules to align. The LCM of 7 and 3 is 21. the next time she attends both on the same day will be determined by finding the least common multiple (LCM) of 7 and 3. The LCM of 7 and 3 is 21. Therefore, she will have to attend both soccer practice and dance lessons again after 21 days. This is the smallest number of days that is divisible by both 7 and 3, ensuring that both activities align on the same day in her schedule.

Therefore, Clarissa will have to attend both soccer practice and dance lessons again in 21 days.