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Home Aptitude Time and Distance See What Others Are Saying!
  • Question
  • A person goes to his office from his home at the speed of 4 km/h and return back at the speed of 6 km/h. Find the average speed of the person?


  • Options
  • A. 4.5 km/h
  • B. 5 km/h
  • C. 10 km/h
  • D. 4.8 km/h

  • Correct Answer
  • 4.8 km/h 

    Explanation

    Average speed = 2ab/(a+b)
    = (2 x 4 x 6)/(4 + 6)
    = 48/10
    = 4.8 km/h


  • More questions

    • 1. 
      121% of 5103 =?

    • Options
    • A. 6000
    • B. 8000
    • C. 10000
    • D. 4000
    • Discuss
    • 2. Rs. 20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?

    • Options
    • A. Rs. 10
    • B. Rs. 10.40
    • C. Rs. 15.20
    • D. Rs. 13
    • Discuss
    • 3. 
      The circumcentre of a triangle is always the point of intersection of the :

    • Options
    • A. Medians
    • B. Bisectors
    • C. Perpendiculars
    • D. Perpendiculars dropped from the, vertices on the opposite side of the triangle
    • Discuss
    • 4. The true discount on a bill of Rs. 540 is Rs. 90. The banker's discount is:

    • Options
    • A. Rs. 60
    • B. Rs. 108
    • C. Rs. 110
    • D. Rs. 112
    • Discuss
    • 5. Today is Monday. After 61 days, it will be:

    • Options
    • A. Wednesday
    • B. Saturday
    • C. Tuesday
    • D. Thursday
    • Discuss
    • 6. 
      If the rate of simple interest is 12% per annum the amount that would fetch interest of Rs 6000 per annum is?

    • Options
    • A. Rs 7200
    • B. Rs 72000
    • C. Rs 50000
    • D. Rs 48543.69
    • Discuss
    • 7. A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges?

    • Options
    • A. 20
    • B. 24
    • C. 30
    • D. 33
    • Discuss
    • 8. 
      75 % of a number when added to 75 is equal to that number. What is the number?

    • Options
    • A. 280
    • B. 400
    • C. 300
    • D. 305
    • Discuss
    • 9. The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:

    • Options
    • A. 20
    • B. 30
    • C. 48
    • D. 58
    • Discuss
    • 10. 
      If 35% of a number is 112, then the number is

    • Options
    • A. 380
    • B. 300
    • C. 320
    • D. 35
    • Discuss


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