Question

an elderly patient goes to a general doctor every 4 weeks and goes to a chiroprator every 6 weeks . if he went to both the general and chiropractor today , how many weeks would he have to wait until both his appointments are on the same day again?

Answer 1

Explanation:

He will actually need to wait for 12 weeks. And that is because if you look at the multiples of 6 and 4 and you'll notice that 12 is the lowest common multiple between them. So you start counting from 6 and 4 at the same time until you notice the LCM of these two numbers then on which ever you number you settle on is how long he will need to wait.