Question 444985
they meet halfway so they each went 320 km
r*t=d
r*(t+2.5)=320
2r*t=320
r*t=160
r=320/(t+2.5)
r=160/t
320/(t+2.5)=160/t
160*(t+2.5)=320t
160t+160*2.5=320t
subtract 160t
160*2.5=160t
divide by 160
t=2.5 hrs 

r*5=320
r=320/5
r=64
I leave the rest for you.