Question 1174116
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Hi,

Justin drove 3 hours before stopping & then increased his speed by 10 mph
he completed a 450-mile trip in 8 hours of driving time
 how fast did he drive in the morning?

Let x be the morning speed.  D = rt

 3x + 5(x+10) = 450mi

  8x - 400mi

   x = 50 mi/hr was Justin's morning speed

Wish You the Best in your Studies.
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