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Post-UTME Mathematics 2017 Objective — Question 30

Question 30 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2017 Objective paper, with the correct answer and a full explanation.

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Maria left home at 9:00 A.M., ran 3 miles to the lake, ran around the lake twice, and ran home along the same route for a total distance of 10 miles. Which single piece of additional information is required to determine Maria's average jogging speed?

  • A. the distance around the lake
  • B. the time she returned homeCorrect
  • C. the amount of time she stopped to rest
  • D. the average length of her jogging stride / E. the amount of time it took her to run from the lake to her home

Explanation

Average speed = distance/time; the total distance (10 miles) is known, so the time she returned home is needed to compute total time.

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