Linear Equations in Two Variables

SAT Math· difficulty 4/5

A car drives 60 mph for 2 hours then 40 mph for 3 hours. Average speed for the trip:

  • A

    5252 mph

  • B

    5555 mph

  • C

    4848 mph

    check_circle
  • D

    5050 mph

Explanation

Total distance =120+120=240= 120 + 120 = 240 mi; total time =5= 5 h; avg =48= 48 mph.

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