Question
Jean and Luke have a bicycle race. Jean cycles at a speed of 14 km/h. Luke cycles at a speed of 21 km/h. If Luke lets Jean start 30 min before him, how long will Luke take to catch up with Jean?
3 m

Click button first when a symbol is required. X

Jean and Luke have a bicycle race. Jean cycles at a speed of 14 km/h. Luke cycles at a speed of 21 km/h. If Luke lets Jean start 30 min before him, how long will Luke take to catch up with Jean?