



 
Hi Carl. Here's a hint: The eastbound plane is going 50 km/hr faster and the total time is 2 hours, so the eastbound plane has gone 100 km further. Therefore, the westbound plane has gone half of 2500100 km in this time. Can you take it from here? Cheers,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 