According to question,Harry and Gary left for their trip to Nashville at 8:00am and 9:00am respectively.The distance to be covered (d) = 300 mileLet, the Harry’s travelling speed be x.i.e. Harry’s travelling speed (s) = x mphThe time taken by Harry (t) = d/s= 300/x hoursGary’s travelling speed (s1) = (x + 10) mphThe time taken by Gary (t1) = d/s= 300/ (x + 10) hoursNow,t – t1= 1 hours300/x – 300/(x + 10) = 1x (x + 10) = 300 (x + 10) – 300xx2+ 10x = 300x + 3000 – 300xx2+ 10x = 3000
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Harshad number,According to Jim,Miles per hour,Mile,Famke Janssen