Ask questions and get helpful answers.
Ask a New Question
  1. Questions
  2. Algebra

A runner wants to run 11.6 km. She knows that her running pace is 8.1 miles per hour. How many minutes must she run?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Brittany
2 answers

  1. speed = dist/time (as in miles/hr)
    The sneaky part here is that everything is in different units. You want to end up with minutes. So, convert everything to miles and minutes

    11.6 km * mi/1.6km = 7.2 mi

    so, plug and chug:
    speed = dist/time
    8.1 = 7.2/t
    t = 8/9 hr

    But we want minutes = 66*8/9 = 53 1/3 min.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Steve

  2. oops, that's 60*8/9

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Steve

Answer this Question

Related Questions

  1. Math

    Mary is riding a merry-go-round, whose radius is 25 feet and which is turning 36 degrees per second. Seeing a friend in the crowd, she steps off the the outer edge of the merry-go-round and suddenly finds it necessary to run? At how many miles per hour

  2. math

    an athlete can run 6 miles in 51 minutes. at this rate, approximately how far could the runner go in 1.5 hours

  3. math

    an athlete. an run in 6 miles in 51 minutes. at this rate approximately how far could the runner go in 1.5 hours? A. 0.2 miles B. 8.5 miles C. 10.6 miles D. 12.75 miles

  4. Programming

    Mandi, Amy, Nicole, and Olivia all ran different distances in different time intervals. Their distances (in miles) and times (in minutes) are as follows: ---------- name

  5. Chemisty

    Dr.Ott can run a marathon (26.22 miles) in 2.925 hours. what is his average speed in miles per second?

  6. Physics

    Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 9. km/h due east. Runner B is initially 5.0 km east of the flagpole and is running with a constant velocity of 8.0 km/h due west. How far are the runners from the

  7. Physics

    A runner hopes to complete the 10000-m run in less than 30min. After running at constant speed for exactly 27min, there are still 1200m to go. The runner must then accelerate at 0.20m/s^2 for how many seconds in order to achieve the desired time?

  8. physics

    A runner is jogging at a steady 1 km/hr. When the runner is 0.88 km from the finish line a bird begins flying from the runner to the finish line at 3 km/hr (3 times as fast as the runner). When the bird reaches the finish line, it turns around and flies

  9. physics

    IF A RUNNER RUNS THE 100 METER DASH IN APPROXIMATELY 9.7 SEC, WHAT IS THE AVERAGE SPEED OF THE RUNNER IN MPH?

  10. Bassick High School

    Vivian is walking to the hairdresser's at 1.3 m/s when she glances at her watch and realizes that she is going to be late for her appointment. Vivian gradually quickens her pace at a rate of 0.090 m/s2(squared) What is Vivians speed after 10.0s? At this

Still need help?

You can ask a new question or browse existing questions.