IKMC 2027 - Grades 3-4 - Self-study SET 20 - Thematic Batch 3 Question 9

Hồng and Trà start an online mathematics test at 7:00. The time limit is 2 hours. Hồng finishes at 8:45. Trà takes 1 hour 30 minutes. Who finishes faster, and how many minutes apart do they finish?