In this video, Singapore Maths Academy tackles Question 5 from Section C of the St Paul’s Girls’ School 11+ Maths Entrance Paper (2017) — a classic algebraic problem designed to test a student’s reasoning and equation-building skills.
We walk through the problem step-by-step, showing students how to convert a word-based scenario into algebraic expressions and solve for the unknowns. These types of questions are a staple in the more challenging sections of top-tier independent school papers and are designed to stretch confident mathematicians.
If your child is preparing for St Paul’s Girls’ School 11+, or any competitive London independent school entrance exam, this is the type of algebra question they’ll need to master.
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