Quiz Discussion

Two cars start simultaneously from cities A and B, towards B and A respectively, on the same route. Once the two cars reach their destinations they turned around and move towards the other city without any loss of time. The two cars continue shuttling in this manner for exactly 20 hours. If the speed of the car starting from A is 60km/hr and the speed of the car starting from B is 40km/hr and the distance between the two cities is 120 km, find the number of times the two cars cross each other?

Course Name: Java

  • 1] 8
  • 2] 10
  • 3] 12
  • 4] 20
  • 5] Can't be determined
Solution
No Solution Present Yet

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# Quiz
1
Discuss

A railway passenger counts the telegraph poles on the rail road as he passes them. The telegraph poles are at a distance of 50 metres. What will be his count in 4 hours, if the speed of the train is 45 km per hour.

  • 1] 600
  • 2] 2500
  • 3] 3600
  • 4] 5000
Solution
2
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
3
Discuss

Two cyclists start from the same place in opposite directions. One goes towards north at 18 kmph and the other goes towards south at 20 kmph. What time will they take to be 47.5 km apart ?

  • 1]

    \({ \text{1}}\frac{1}{4}{ \text{ hrs}}\)

  • 2]

    \({ \text{2}}\frac{1}{4}{ \text{ hrs}}\)

  • 3]

    2 hrs 23 min

  • 4]

    \({ \text{2}}\frac{1}{2}{ \text{ hrs}}\)

Solution
4
Discuss

A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km and 11 km per hour respectively. What is the distance between them after 6 minutes ?

  • 1] 100 m
  • 2] 150 m
  • 3] 190 m
  • 4] 200 m
Solution
5
Discuss

A person travels three equal distance at a speed of x km/hr, y km/hr and z km/hr respectively. What is the average speed for the whole journey ?

  • 1]

    \(\frac{{xyz}}{{3\left( {xy + yz + zx} \right)}}\)    km/hr

  • 2]

    \(\frac{{xyz}}{{\left( {xy + yz + zx} \right)}}\)    km/hr

  • 3]

    \(\frac{{\left( {xy + yz + zx} \right)}}{{xyz}}\)    km/hr

  • 4]

    \(\frac{{3xyz}}{{\left( {xy + yz + zx} \right)}}\)    km/hr

Solution
6
Discuss

An express train travelled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How much time does the Train take to travel between two places which are 600 km apart?

  • 1]

    6 hrs 21 min

  • 2]

    6 hrs 24 min

  • 3]

    6 hrs 27 min

  • 4]

    6 hrs 30 min

Solution
7
Discuss

if a man increase his speed by 3km/hr,he reaches his home in 3/4th of his normal time. if he decreases his speed by 3km/h he reaches his home 2 hours late. what is the distance the man travel to reach his home​

  • 1]

    32 km

  • 2]

    34 km

  • 3]

    36 km

  • 4]

    38 km

Solution
8
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
9
Discuss

The ratio between the speed of a bus and train is 15 : 27 respectively. Also, a car covered a distance of 720 km in 9 hours. The speed of the Bus is three-fourth the speed of the car. How much distance will the train cover in 7 hours?

  • 1] 760 km
  • 2] 756 km
  • 3] 740 km
  • 4] None of these
Solution
10
Discuss

A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km and 11 km per hour respectively. What is the distance between them after 6 minutes ?

  • 1]

    100 m

  • 2]

    150 m

  • 3]

    190 m

  • 4]

    290 m

Solution
# Quiz