Linear Functions

SAT Math· difficulty 3/5

The number of pages printed varies directly with time. 30 pages take 4 minutes. How long for 75 pages?

  • A

    1010 min

    check_circle
  • B

    1212 min

  • C

    88 min

  • D

    1515 min

Explanation

Rate =30/4=7.5= 30/4 = 7.5 pages/min; time =75/7.5=10= 75/7.5 = 10 min.

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