Question

Ian and Ruth volunteer at the community center. Ian works every fifth day and Ruth works every seventh day. They both worked on Wednesday, October 24th. What is the DATE when they will work together again?

Answer 1

11/29/2020

Explanation:

Every seventh and fifth day, both numbers are prime, 5 x 7 = 35, so 35 days after October 24th is November 29th because October has 30 days.