Quiz Discussion

Two rifles are fired from the same place at a difference of 11 minutes 45 seconds. But a man who is coming towards the place in a train hears the second sound after 11 minutes. Find the speed of train. (speed of sound = 330 m/s)

Course Name: Quantitative Aptitude

  • 1] 72 kmph
  • 2] 36 kmph
  • 3] 81 kmph
  • 4] 108 kmph
  • 5] None of these
Solution
No Solution Present Yet

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1
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A 6 cm long cigarette burns up in 15 minutes if no puff is taken.For every puff, it burns three times as fast during the duration of the puff.If the cigarette burns itself in 13 minutes, then how many puffs has the smoker taken if the average puff lasted 3 seconds?

  • 1] 17
  • 2] 18
  • 3] 20
  • 4] 22
  • 5] None of these
Solution
2
Discuss

Two boats A and B start towards each other from two places, 108 km apart. Speed of the boats A and B in still water are 12 km/h and 15 km/h respectively. If A proceeds down and B up the stream, they will meet after:

  • 1] 4.5 hours
  • 2] 4 hours
  • 3] 5.4 hours
  • 4] 6 hours
Solution
3
Discuss

A square playground measure 1127.6164 sq.m. If a man walks \(2\frac{9}{{20}}\) m a minute, the time taken by him to walk one round around it is approximately :

 

  • 1] 50.82 minutes
  • 2] 54.82 minutes
  • 3] 54.62 minutes
  • 4] 50.62 minutes
Solution
4
Discuss

The speeds of John and Max are 30 km/hr and 40 km/hr. Initially Max is at a place L and Jhon is at a place M. The distance between L and M is 650 kms. John started his journey 3 hours earlier than Max to meet each other. If they meet each other at a place P somewhere between L and M, then the distance between P and M is :

  • 1] 220 kms
  • 2] 250 kms
  • 3] 330 kms
  • 4] 320 kms
Solution
5
Discuss

Two trains start from the same point simultaneously and in the same direction. The first train travels at 40 km /h, and the speed of the second train is 25% more than the speed of first train. Thirty minutes later, a third train starts from same point and in the same direction. It over takes the second train 90 minutes later than it overtook the first train. What is the speed of the third train?

  • 1] 20 km/h
  • 2] 40 km/h
  • 3] 60 km/h
  • 4] 50 km/h
  • 5] 80 km/h
Solution
6
Discuss

Walking at the rate of 4 km an hour, a man cover a certain distance in 3 hours 45 minutes. If he covers the same distance on cycle, cycling at the rate of 16.5 km/hour, the time taken by him is :

  • 1] 55.45 minutes
  • 2] 54.55 minutes
  • 3] 55.44 minutes
  • 4] 45.55 minutes
Solution
7
Discuss

A motorboat in still water travels at speed of 36 kmph. It goes 56 km upstream in 1 hour 45 minutes. The time taken by it to cover the same distance down the stream will be:

  • 1] 2 Hours 25 Minutes
  • 2] 3 Hours
  • 3] 1 Hours 24 Minutes
  • 4] 2 Hours 21 Minutes
Solution
8
Discuss

A motor boat takes 2 hours to travel a distance of 9 km downstream and it takes 6 hours to travel the same distance against the current. The speed of the boat in still water and that of the current (in km/h) respectively are:

  • 1] 6, 5 km/h
  • 2] 3, 1.5 km/h
  • 3] 8, 5 km/h
  • 4] 9, 3 km/h
Solution
9
Discuss

Page and Plant are running on a track AB of length 10 metres. They start running simultaneously from the ends A and B respectively. The moment they reach either of the ends, they turn around and continue running. Page and Plant run with constant speeds of 2m/s and 5m/s respectively. How far from A (in metres) are they, when they meet for the 23rd time?

  • 1]

    0 meters

  • 2]

    10 meters

  • 3]

    40 meters

  • 4]

    \(\frac{{60}}{7}\) meters

  • 5]

    None of these

Solution
10
Discuss

A and B walk around a circular track. They start at 8 am from the same point in the opposite directions. A and B walk at a speed of 2 rounds per hour and 3 rounds per hour respectively. How many times shall they cross each other before 9.30 am ?

  • 1] 5 times
  • 2] 6 times
  • 3] 7 times
  • 4] 8 times
Solution
# Quiz