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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?

 Aug 3, 2020
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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

 Aug 3, 2020

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