VTMO 2026 - Grade 2 - Semifinal - SET 10 - Self-study Question 17

An and Bình travel from S to F along the edges of the rectangle. An follows $S\to A_1\to A_2\to F$; Bình follows $S\to B_1\to B_2\to F$. An travels 10 m farther. By how many metres is $A_2F$ longer than $B_2F$?