Question

Claire takes private lacrosse lessons every 6 days and piano lessons every 4 days. In 60 days, how often will she have lacrosse lessons and piano lessons on the same day.

Answer 1

Multiples of 4: 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60
12 24 36 and 48 are the only common factors
so 4 days