Question

Claire takes private lacrosse lessons every 25 days and piano lessons every 35 days. If today she had both lessons how many days from today will she have a lacrosse and piano lessons on the same day again

Answer 1

LCM of 25 and 35.

25 = 5 x 5
35 = 5 x 7

LCM = 5 x 5 x 7 = 175

Therefore, she will have both lessons 175 days from today.