Cyclist 18 km/h for 2 h then 12 km/h for 1 h. Average speed?
Q1. Cyclist 18 km/h for 2 h then 12 km/h for 1 h. Average speed?
Answer: 16 km/h
Explanation: Total 48 km in 3 hours gives average speed 16 km/h. Work each step carefully; ISSB math rewards accuracy under time pressure.