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Ratios, Rates, Proportional Relationships, and Units

SAT Math· difficulty 4/5

Two cars start 300300 miles apart, driving toward each other at 4040 mph and 6060 mph. When do they meet?

  • A

    After 2.5 hours

  • B

    After 3 hours

    check_circle
  • C

    After 3.5 hours

  • D

    After 4 hours

Explanation

Closing rate =100= 100 mph. t=300/100=3t = 300/100 = 3 hours.

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