Speed, Time and Distance


  1. If a person travel 39 km at a speed of 26 km/h, another 39 km at a speed of 39 km/h and 39 km again at a speed of 52 km/h . Then find the average speed of entire journey
    1. 35 km/h
    2. 35 km/h
    3. 36 km/h
    4. 40 km/h

  1. View Hint View Answer Discuss in Forum

    Average speed of entire journey
    = (39 + 39 + 39)/(39/26 + 39/39 +39/52)

    Correct Option: C

    Average speed of entire journey
    = (39 + 39 + 39)/(39/26 + 39/39 +39/52)
    = 3/(1/26 + 1/39 +1/52)
    = 3/[(6 + 4 + 3)/156]
    = 3 x 156/13 = 36 km/h


  1. If speed of 31/3 m/s is converted to km/h, then it would be
    1. 8 km/h
    2. 9 km/h
    3. 10 km/h
    4. 12 km/h

  1. View Hint View Answer Discuss in Forum

    ∵ 1 m/s = 18/5 km/h

    Correct Option: D

    ∵ 1 m/s = 18/5 km/h
    ∴ 31/3 m/s = 10/3 m/s = (10/3) x (18/5) km/h
    = 12 km/h



  1. A car covers 300 km 15 h. Find the speed of the car ?
    1. 20 km/h
    2. 25 km/h
    3. 15 km/h
    4. 24 km/h

  1. View Hint View Answer Discuss in Forum

    We know that, speed = Distance / Time

    Correct Option: A

    We know that, speed = Distance / Time
    ∴ Required speed = 300/15 =20 km/h


  1. A car covers a distance of 690 km in 30 h. What is the average speed of the car?
    1. 25 km/h
    2. 23 km/h
    3. 20 km/h
    4. 18 km/h

  1. View Hint View Answer Discuss in Forum

    Required speed = Distance / Time

    Correct Option: B

    Required speed = Distance/ Time
    = 690/30
    = 23 km/h



  1. A bus is running with a uniform speed of 37 km/h. What distance will be covered by bus in 8 h?
    1. 246 km
    2. 289 km
    3. 296 km
    4. 276 km

  1. View Hint View Answer Discuss in Forum

    We know that, Speed = Distance / Time

    Correct Option: C

    We know that, Speed = Distance / Time
    ∴ Required distance = Speed x Time
    = 37 x 8 = 296 km