Welcome to your interview.
The question is on your right: Division Time Ropes. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You have two ropes that will burn through in 30 minutes. How would you measure out 45 minutes?