



 
Hi Samantha, The important act you need to use is that rate is distance divided by time ( km/hr = km divided by hours). Suppose the plane flying west is flying at a rate of r km/hr then the plane flying east is flying at r + 50 km/hr. Hence they are moving apart at a rate of r + r + 50 = 2r + 50 km/hr. They fly for 2 hours and the distance they are apart is 2500 km. What is r? Penny  


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