math

posted by .

lily left house at 11.43 am and travelled to town, a distance of 31km. She arrived there at 12.09pm. What was the average speed in km/h and m/s.[ans:71.54 km/h & 19.87 m/s]

my answer is
~31/1.1=28.18 km/h
~31000/3960=7.83 m/s

can some1 show me the calculation if im wrong.

  • math -

    60-43+9 = 26 min
    26/60 = .433333 hr
    26*60 = 1560 seconds

    31 km/.433333 hr = 71.54 km/hr

    31000m/1560 s = 19.87 m/s

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    A motorist took a total of 4hr to drive from town A to town C. He took 1hr to travel from town A to town B,which is between town A & town C. The distance between town B & town C is 11/15 of the distance between town A and town C. If …
  2. Mathematics

    a bus travelled at at average speed of 54km/hour from lape town to cape town calculate in km the distance from lape to cape town
  3. physics

    a car left panel at 12:35h and arrived in place x at 03:10h it travelled at average speed of 45 km per hr. calculate the distance from penal to place x ?
  4. math

    the distance between town A and town B was 210km. At 9:20pm a bus sets off from town A to town B and a car left from town B to town A. The average speed of the bus was 60km/h and the average speed of the car was 80km/h. a)Calculate …
  5. Maths

    At 9.30 a.m., a car left town X for town Y at a speed of 60km/h for the whole journey. At 11 a.m., a lorry started from town Y and travelled towards town X. The speed of the lorry remained the same until it passed the car at 12.30 …
  6. Mathematics

    A car X left town A for town B at the same time that another car Y left town B for town A, each travelling at constant speed. They met 80 minutes later and car X arrived at town B 36 minutes after car Y reached town A. How long did …
  7. Maths Problem

    Really need help..I can't figure out how?
  8. Math

    The distance between Town A and Town B was 210 km. At 9:20 P.M., a bus set off from Town A to Town B and a car left from Town B to Town A. The average speed of the bus was 60 km/h, and the average speed of the car was 80km/h. a) Calculate …
  9. math

    The distance between two towns P and Q is 390 km. John left town P at 7:30 am and travelled towards town Q at an average speed of 60 km/hr. Half an hour later Patrick left town Q and travelled towards town P at the same speed. At what …
  10. math

    mr tan and m town wong drove from town k to town h. they started their journeys at different times. mr tan drove at 66km/h and took 50 minutes to reach town h. mr wong drove an average spped of 75km/h.both arrived town h at 2.35pm. …

More Similar Questions