Question

7. Charlie and Dasha are roommates, and

they have a dog. If neither of them is
home, they hire someone to watch the
dog. Charlie must go on business trips
every 6 months, while Dasha must go on
business trips every 9 months. If they
both just got back from business trips,
how many months will it be before they
need to hire someone to look after the
dog again? Explain your answer.​

Answer 1

18 months

Explanation:

First find the least common multiple.In case you don't know what that is its basically the number they have in common when you skip count by 6 and 9.Your answer would be 18.So that's your answer.