Question

Starting from 500 miles away, a car drives toward a town and then passes it. The car travels at a constant rate of 50 miles per hour. The distance of the car from the checkpoint is given by d = |500 – 50t| (d = distance; t = time). At what two times is the car 25 miles from the town? *

2 hours and 3 hours
9.5 hours and 10.5 hours
10.33 hours and 20.33 hours **
25 hours and 100 hours

Answer 1

|500 – 50t| = 25
solve these two equations
(A) 500-50t = 25
(B) 500-50t = -25