Suppose you're driving to the city at a constant speed of 75 mi/h for 50 miles. Then construction slows you to a pokey rate of 45 mi/h for the remainder of the trip. You arrive after driving 2 hours and 15 minutes. How far do you live from the city?

Question

A.180 mi

B.120 mi

C.200 mi

D.71 mi

Answer 1

distance=50+time@45*45mi/hr
now, timetotal=time@45+time@75
= time@45+50/75 hr
solve for time@45, then put that into the first distance equation