UKMT Grey Kangaroo, 2026

Two buses left at 08:00, one travelling from Ell to Em and one travelling from Em to Ell, along the same road. The buses both travelled at constant speeds, without stopping. They passed each other at 8:30 and continued along their routes. One bus arrived at its destination at 8:45. At what time did the other bus arrive at its destination?

(A) $8{:}45$ (B) $9{:}00$ (C) $9{:}15$ (D) $9{:}30$ (E) $9{:}45$