Question 945528
If one car drives 70km/hr and the other 90 km/hr they approach at (70 km/hr+90km/hr)=160 km/hr from 480 km apart, it takes (480 km/160 km/hr)= 3 hrs for the cars to meet. At 140 km/hr the bird flies (3 hrs)(140 km/hr)=420 km 
ANSWER The canary flies 420 km in the time it takes the cars to meet.