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can someone please help me, Rob is going to college in Oklahoma which is 680 miles from their his home in Tennessee. He can travel on state highways at 55mph or on the interstate at 70mph. Approximately, how much longer will his trip be if he takes state highways?

A. 5 hrs 3 min
B. 4 hrs 13 min
C. 3 hrs 5 min
D. 2 hrs 39 min

  • math -

    Have you considered using the equation

    time=distanc/speed

    figure the time for each, and subtract.

  • math -

    Yes. 3 hours, 5 minutes is correct.

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