Question

Sharif likes exersicing.He goes hill-climbing every 12 days anf goes swimming every 8 days.If je goes hill-climbing and swimming today,how many days later will he go hill-climbing and swimming on the same day?

Answer 1

He wil goes to Hill-climbing and swimming on the same day, after 24 days.

We should find out the Least Common Factor (LCM) of 12 and 8, and you will get 24.

Answer 2

This is a lowest common multiple question.
to find the lowest common multiple, you need to find the prime factors of the two numbers:
$8 = 2 , 2 , 2$
$12 = 2 , 2 , 3$
Take out duplicates:
$2,2,2,3$
and multiply them together:
$2*2*2*3 = 24$
and that is your answer.
Easy peasy.