Question 1
SEAMO self-study edition 2027; not an official 2027 paper. Original source years are retained. 25 questions, 90 minutes; Q1–10: 3 points, Q11–20: 4 points, Q21–25: 6 points, total 100. Original response types and all subparts are preserved. Verified is an editorial convention; source defects, necessary assumptions and unresolved mathematical uncertainty are disclosed.
The distance between two train stations, A and B, is 840 km. A train travels from A at 52 km/h. Another train leaves B at the same time. What is the speed, in km/h, of the second train if they meet 8 hours later?
Interpret the trains as moving towards each other at constant speeds along the route shown.
The distance between two train stations, A and B, is 840 km. A train travels from A at 52 km/h. Another train leaves B at the same time. What is the speed, in km/h, of the second train if they meet 8 hours later?
Interpret the trains as moving towards each other at constant speeds along the route shown.