Question 208922
"A model car enthusiast has a remote control car.  He starts out traveling North at 20km/h in his car.  But his remote car starts at the same time traveling 30km/h to the West.  Unfortunately the remote control radio has a range of only 10km so eventually the plane loses contact with the remote.

a.	How long does it take for the remote and plane to lose contact? "

Is he in the car or the plane? Which way is the plane going?