algebra

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Sheila leaves her home to go to her sister's house, which is a 24-mile drive. The trip takes 36 minutes. She returns home taking the same route at a speed that is 5 miles per hour faster.
How many minutes did the trip home take?

I came up with 33 is this correct?

  • algebra -

    Not sure how you got your answer, but it is one minute off.

    Speed going = 24 miles /(36/60) houre
    = 40 miles per hour
    return speed = 40+5 = 45 miles per hour
    Time required = 24 miles / 45 mph * 60 minutes/hour
    = 32 minutes.

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