Question
Hilda and Albert have a bicycle race. Hilda cycles at a speed of 20 km/h. Albert cycles at a speed of 22 km/h. If Albert lets Hilda start 30 min before him, how long will Albert take to catch up with Hilda?
3 m

Click button first when a symbol is required. X

Hilda and Albert have a bicycle race. Hilda cycles at a speed of 20 km/h. Albert cycles at a speed of 22 km/h. If Albert lets Hilda start 30 min before him, how long will Albert take to catch up with Hilda?