Linear Equations in One Variable

SAT Math· difficulty 3/5

A jogger and a cyclist start at the same point. The jogger goes 6 mph; the cyclist 18 mph in the same direction. After how many hours is the cyclist 24 miles ahead?

  • A

    3

  • B

    1

  • C

    2

    check_circle
  • D

    4

Explanation

Relative speed =186=12= 18 - 6 = 12. Time =24/12=2= 24/12 = 2 hours.

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