Answer:
a) 
b) 
c) t = 2.031s X = 1.52m
Explanation:
Let X1 be position of car A as a function of time and X2 be the position of car B as a function of time:
X1 = Xo1 + V1*t If we evaluate this expression at t=t1
S1 = Xo1 + V1*t1 Solving for Xo1 we get its initial position at t=0:
Xo1 = S1 - V1*t1
Similarly for car B:
Xo2 = S2 - V2*t2
Now, to find the instant when car B overtakes car A:
X1 = X2 Replacing their functions in time:
(S1 - V1*t1) + V1*t = (S2 - V2*t2) + V2*t Solving for t:
This is the instant when B reaches A
If we replace this expression in either X1 or X2 expression, we get that position: X1 = X2

If we evaluate these two expressions with the given values:
t = 2.031s and X = 1.52m