Question 904551
gaining speed 70 -55= 15 mph
headstart  55*0.25 =13.75 miles
time to catch up 13.75/15=0.91666667 hours
time to catch up =55 minutes
algebraic solution
55(t+0.25)=70t
55t+13.75=70t
13.75=70t-55t
13.75=15t
0.91666667=t
distance to meeting 0.91666667*70=64.1666667 miles