geet wrote:Distance betw NY and Paris is 315miles. Ra and Pa leave NY at same time. However Pa arrives in Paris 1hr 10mins before Ra with an avg speed that was 9 miles per hr faster. how fast was each traveling ?
you can see how to set this up here
. Since they give Pa's speed in terms of Ra's speed, pick a variable for Ra's speed and then do an expression for Pa's speed. Go from there, using d=rt w/ d=315 and the stuff you just did for r.