Question
Dana and Harry have a bicycle race. Dana cycles at a speed of 15 km/h. Harry cycles at a speed of 20 km/h. If Harry lets Dana start 40 min before him, how long will Harry take to catch up with Dana?
3 m

Click button first when a symbol is required. X

Dana and Harry have a bicycle race. Dana cycles at a speed of 15 km/h. Harry cycles at a speed of 20 km/h. If Harry lets Dana start 40 min before him, how long will Harry take to catch up with Dana?