Train a departs station one traveling at 75 mph. train n departs station two 30 minutes later traveling at 45 mph. the stations are 300 miles apart. the equation below gives the distance between the trains, d, in miles as a function of, t, the time after train b departs. d=|262.5-120t| for which two values of t will d=50? round to the nearest tenth. a)1.8 and 2.6 b)0.2 and 0.3 c)-17.8 and 26.0 d)-1.8 and 1.8