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Linear Equations in One Variable

SAT Math· difficulty 5/5

Two cyclists start at the same point and ride in opposite directions. One rides at 1212 mph and the other at 1515 mph. After how many hours are they 108108 miles apart?

  • A

    3.5

  • B

    4

    check_circle
  • C

    3

  • D

    4.5

Explanation

Combined rate =27= 27 mph. Time =108/27=4= 108 / 27 = 4 hours.

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