Question 905140
225=45*t+40*t
225=85*t
t=2.64705882 hours
The total time for car  b to be 225 km from  car  a is 2.64705882 hours
d=R*t
d=40*2.64705882
d=105.882353+0
d=105.882353 miles from b at 40 mph
d=r*t
d=45*2.64705882
d=119.117647 miles from  a at 45 mph