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Quiz Discussion

A man starts in a boat from A toward B against the stream. After reaching a point M on the way, he throws a rubber ring into the water. He takes 8 minutes from then to reach his destination and the ring exactly A at that moment. If the distance between  A and B is 4 km, then find the speed of boat in still water

Course Name: Quantitative Aptitude

  • 1]

    15 kmph

  • 2]

    12 kmph

  • 3]

    30 kmph

  • 4]

    45 kmph

Solution
No Solution Present Yet

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1
Discuss

In a game of 100 points, A can give B 20 points and C 28 points. Then, B can give C:

  • 1] 8 points
  • 2] 10 points
  • 3] 14 points
  • 4] 40 points
Solution
10
Discuss

In a race of 200 m, B can give a start of 10 m to A and C can give a start of 20 m to B. The start that C can give to A in the same race is ?

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

In a 400 m race, A gives B a start of 5 seconds and beats him by 15 m. In another race of 400 m, A beats B by 7 1/7 seconds. Their respective speed are -

 

  • 1] 6 m/sec, 7 m/sec
  • 2] 5 m/sec, 7 m/sec
  • 3] 8 m/sec, 7 m/sec
  • 4] 9 m/sec, 7 m/sec
Solution
3
Discuss

In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:

  • 1] 60 m
  • 2] 40 m
  • 3] 20 m
  • 4] 10 m
Solution
4
Discuss

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:

  • 1] 18 m
  • 2] 20 m
  • 3] 27 m
  • 4] 9 m
Solution
5
Discuss

A runs 1 2/3 or  times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?

 

  • 1] 200 m
  • 2] 300 m
  • 3] 270 m
  • 4] 160 m
Solution
6
Discuss

In 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by:

  • 1] 20 m
  • 2] 25 m
  • 3] 22.5 m
  • 4] 9 m
Solution
7
Discuss

A can run 22.5 m while B runs 25 m. In a kilometre race B beats A by:

  • 1]

    100 m

  • 2]

    m

  • 3]

    25 m

  • 4]

    50 m

Solution
8
Discuss

Gopal , Ganesh and Giri start from point A and run around a circular path at speed of 10 kmph, 14 kmph and 6 kmph respectively. Gopal & Giri run in the same direction and Ganesh run in the opposite direction. The length of track is 20 km. In how much time will all three of them be together for the first time?

  • 1]

    3 hr

  • 2]

    4 hr

  • 3]

    5 hr

  • 4]

    6 hr

Solution
9
Discuss

Two bike riders ride in opposite directions around a circular track, starting at the same time from the same point. Biker A rides at a speed of 16 kmph and biker B rides at a speed of 14 kmph. If the track has a diameter of 40 km, after how much time (in hours) will the two bikers meet?

  • 1]

    6.52

  • 2]

    8.14

  • 3]

    4.18

  • 4]

    5.02

Solution
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