The drive from Oakland to Pinewood was a tricky one. I covered the uphill distance of 70 miles at 35 miles per hour. The return journey from Pinewood to Oakland was downhill, and I managed to drive at 63 miles per hour. What was my average speed for the entire journey?

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yes Anish is correct

Anish is correct:

Average Speed = Total Distance / Total Time

= (70+70)/(2+1.11111)

= 45 mph

(39+63)/2 = 98/2 = 49 miles / hr

45 mph