Which pair of angles is a linear pair?
a. angle vqt and angle sqt
b. angle wqv and angle vqu
c. angle rqs and angle sqt
b. angle sqt and angle tqu

respond with the correct answer, and how you got the answer : )

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?