Quiz Discussion

A person can row a boat d km upstream and the same distance downstream in 5 hours 15 minutes. Also, he can row the boat 2d km upstream in 7 hours. How long will it take to row the same distance 2d km downstream?

Course Name: Quantitative Aptitude

  • 1]

    \(\frac{{3}}{{2}}\) hours

  • 2]

    7 hours

  • 3]

    \(\frac{{29}}{{4}}\) hours

  • 4]

    \(\frac{{7}}{{2}}\) hours

Solution
No Solution Present Yet

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1
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In a race of 200 meters, B can gives a start of 10 meters to A, and C can gives a start of 20 meters to B. The starts that C can gives to A, in the same race is:

  • 1] 30 meters
  • 2] 25 meters
  • 3] 29 meters
  • 4] 27 meters
Solution
2
Discuss

The speed of A and B are in the ratio 3 : 4. A takes 20 minutes more than B to reach a destination. Time in which A reach the destination?

  • 1]

    \(1\frac{1}{3}\) hours

  • 2]

    2 hours

  • 3]

    \(2\frac{2}{3}\) hours

  • 4]

    \(1\frac{2}{3}\) hours

Solution
3
Discuss

A train met with an accident 120 km from station A. It completed the remaining journey at \(\frac{5}{6}\) of its previous speed and reached 2 hours late at station B. Had the accident taken place 300 km further, it would have been only 1 hour late. What is the speed of the train?

 

  • 1] 100 km/h
  • 2] 12 km/h
  • 3] 60 km/h
  • 4] 50 km/h
Solution
4
Discuss

A certain distance is covered at a certain speed. If half of this distance is covered in double the time, the ratio of the two speed is :

  • 1] 1 : 16
  • 2] 4 : 1
  • 3] 2 : 1
  • 4] 1 : 4
Solution
5
Discuss

An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in \(1\frac{2}{3}\) hours, it must travel at a speed of :

 

  • 1] 300 kmph
  • 2] 360 kmph
  • 3] 600 kmph
  • 4] 720 kmph
Solution
6
Discuss

The wheel of an engine of 300 cm in circumference makes 10 revolutions in 6 seconds. What is the speed of the wheel (in km/h)?

  • 1] 18
  • 2] 20
  • 3] 27
  • 4] 36
Solution
7
Discuss

The speed of a bus is 72 km /hr. The distance covered by the bus in 5 seconds is :

  • 1] 100 metres
  • 2] 60 metres
  • 3] 50 metres
  • 4] 74.5 metres
Solution
8
Discuss

Robert is travelling on his cycle and has calculated to reach point A at 2 P.M. if he travels at 10 kmph, he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach A at 1 P.M.?

  • 1] 8 kmph
  • 2] 11 kmph
  • 3] 12 kmph
  • 4] 14 kmph
Solution
9
Discuss

A is twice fast as B and B is thrice fast as C. The journey covered by C in 78 minutes will be covered by A in :

  • 1] 13 min
  • 2] 15.5 min
  • 3] 17 min
  • 4] 12 min
Solution
10
Discuss

Deepa rides her bike at an average speed of 30 km/hr and reaches her destination in 6 hours. Hema covers the same distance in 4 hours. If Deepa increases her average speed by 10 km/hr and Hema increases her average speed by 5 km/hr, what would be the difference in their time taken to reach the destination ?

  • 1] 40 min
  • 2] 45 min
  • 3] 54 min
  • 4] 1 hr
  • 5] None of these
Solution
# Quiz