+244 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? A. 180 mi B.120 mi C.200 mi D.71 mi 71 mi
+36923 The distance equals the initial 50 miles at 75 mph + additional miles at 45mph.
50 m / 75mph = 2/3 hr = 40 minutes
The REST of the time was at 45 MPH 2 hr 15 min - 40 min = 1 hr 35 min @ 45 MPH
Rate times time = distance 45 MPH x 1 hr 35 min = 45 mph x 1.58333hr = 71.25 miles
PLUS the initial 50 miles = 121.25 miles
