Answer: 4/3
Step-by-step explanation:
As you know this graph is a lemniscate
I am sorry, that is not enough information. You have to show us the graph.
I’m not sure what happened while you were writing this, but if I’m reading it right, “My” has 18 books. If “My” has 3 times as many as 6, that also means 3 times 6, which is 18.