Question 165092
there are two equations and two unknowns (distance and time)
__ solving by substitution is probably the best technique
__ d=rt


G35 __  d+100=50t


Mountaineer __ d=40t


substituting __ (40t)+100=50t __ 100=10t __ 10=t


substituting __ d=40(10) __ d=400