Question

Two sisters have decided to watch all the episodes of a popular TV show on DVD. Sarah has already watched four episodes and will continue to watch the show at a rate of two episodes per day. Molly, who hadn’t yet seen the show, will start watching three episodes per day once the two sisters get to the point where they have watch the same number of episodes, they plan to finish the series together. How long will that take? How many episodes each sister have watched at that point

Answer 1

4 days where they both will have watched 12 episodes

Explanation:

Because Sarah watches two episodes per day and Molly watches 3 episodes per day, you look at the times tables for 2 and 3 and list them, only starting molly's on Sarah's 3rd day

2

4

6 3

8 6

10 9

12 12