Question
Jean and Mark started biking at 9.40 a.m. along 9-km trail. Jean took 30 minutes to reach the finishing point. Mark’s speed was 12 km/h slower than Jean’s. At what time did Mark reach the finishing point?
3 m

Click button first when a symbol is required. X

Jean and Mark started biking at 9.40 a.m. along 9-km trail. Jean took 30 minutes to reach the finishing point. Mark’s speed was 12 km/h slower than Jean’s. At what time did Mark reach the finishing point?