✓Free Maths Q & A Practice1 of 5 free exam-style exercises in this topic
Ethan plans a three-stage cycling route \(A \to B \to C \to D\). The length of each stage, in kilometres, is given in terms of \(x\) on the sketch below (not drawn to scale).
The first two stages together are \(10\text{ km}\) longer than the final stage \(CD\). What is the length of stage \(AB\)?