City of London School for Girls 11+ Maths Ratio Question

In this video, Singapore Maths Academy walks through a ratio problem taken from the official City of London School for Girls 11+ Maths Sample Paper. Ratio problems like this are frequently included in 11+ entrance exams to test a child’s understanding of proportional relationships and mathematical reasoning.

We show students how to read the question carefully, set up equivalent ratios, and apply logical steps to arrive at the correct answer. The video breaks down the problem using easy-to-follow visuals and clear narration, making it suitable for both confident and developing learners.

If your child is preparing for the City of London School for Girls 11+ entrance exam, this worked example is a great way to boost their confidence in handling ratio problems — one of the most common yet misunderstood topics in 11+ maths.