math

at 7:00am joe starts jogging at 6 mi/h. at 7:10 am ken starts after him. how fast must ken run to overtake joe at 7:30am?

If Joe runs at 6 mi/hr for 30 minutes (7:00 to 7:30), his distance traveled is 6 mi/hr x 0.5 hr = 3 miles.
Ken starts at 7:10 and runs until 7:30 for a time of 20 minutes. For Ken to just catch up with Joe in 20 minutes, the rate - distance/time = 3 mi divided by 1/3 Hr =3 x 3/1 = 9 miles/hr. So to overtake Joe, Ken must run one step faster somewhere in the 3 miles.

  1. 👍
  2. 👎
  3. 👁
  1. this is not a valid question

    1. 👍
    2. 👎
  2. I beg to differ. I think it is a very valid question

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    write a rule for the sequence 3, -3, -9, -15 A. starts with 3 and add -6 repeatedly*** B. starts with -6 and add 3 repeatedly C. starts with 3 and add 6 repeatedly D. starts with 3 and subtract -6 repeatedly

  2. English

    dentify the correct sentence. A. My American Literature class starts at 12:30 p.m. B. My Literature class starts at 12:30 p.m. C. My American literature class starts at 12:30 PM. D. My literature class starts at 12:30 p.m. in the

  3. Math

    5, -4 -13 -22 write a rule for the sequence Need some help A - starts with - 9 and add 5 repeatedly B - starts with 5 and add 9 repeatedly C - starts with 5 and subtract - 9 repeatedly D - starts with 5 and add - 9 repeatedly I

  4. math

    A girl starts at a point A and runs east at the rate of 10 ft/sec. One minute later, another girl starts at A and runs north at a rate of 8 ft/sec. At what rate is the distance between them changing 1 minute after the second girl

  1. Math

    A man starts walking north at 5 ft/s from a point P. Five minutes later a woman starts walking south at 4 ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 min after the woman starts walking?

  2. Mathematics

    An expression contains 26 terms, one for each letter of the alphabet. It starts a + 4b + 9c + 16d + 25e + … Another expression containing 26 terms starts a + 2b + 4c + 8d + 16e + … What is the sum of all the coefficients?

  3. environmental science

    Exponential growth a. remains constant. b. starts out slowly and remains slow. c. starts out slowly then becomes very rapid. d. starts rapidly and remains rapid. e. starts rapidly and then slows.

  4. math

    Jon begins jogging at a steady 3m/sec down the middle of lane one of a public track. Laura starts even with him in the center of lane two but moves 4m/sec. At the instant they begin, Ellie is located 100 meters down he track in

  1. calculus

    A man starts walking north at 4ft/s from a point P. Five minutes later a woman starts walking south at 5ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 min after the woman starts walking? I'm

  2. physics

    A flywheel with a diameter of 1 m is initially at rest. Its angular acceleration versus time is graphed in the figure. (a) What is the angular separation between the initial position of a fixed point on the rim of the flywheel and

  3. Earth Science - Please Check My Answer

    Please help with the following: How does sleet differ from snow? A. It is not a form of precipitation. B. It is liquid and not ice. C. It starts as rain and freezes in the air. D. It starts as water vapor and changes to a solid. I

  4. chemistry

    Consider the following structure: CH3CHClCH2NH2 Is it 2-chloropropan-1-amine or 2-chloropropan-3-amine And do I count the carbons from where the Cl starts or from where the NH2 starts? Thank you for your time.

You can view more similar questions or ask a new question.