Gabriella drives her car 360 miles and averages a certain speed, If the average speed had been 6 mph less, she could have traveled only 330 miles in the same length of time. What is her average speed?
+37146 distance/ rate = time
360 / r = time
330/ (r-6) = the same time
360/r = 330(r-6)
360(r-6) = 330 r
30r = 2160
r=72 m/hr
