Home
Class 14
MATHS
A train covers a distance in 30 min if i...

A train covers a distance in 30 min if it runs at a speed of 54 km/h on an average. The speed at which the train must run to reduce the time of the journey to 20 min is:
एक ट्रेन 30 मिनट में एक दूरी तय करती है, यदि यह औसतन 54 किमी/घंटा की चाल से चलती है। यात्रा के समय को 20 मिनट तक कम करने के लिए ट्रेन को किस चाल से चलना चाहिए ?

A

none of these/ इनमें से कोई नहीं

B

81 km/h

C

60 km/h

D

75 km/h

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • SIMPLIFICATION

    PINNACLE|Exercise EXERCISE|250 Videos

  • SSC CGL MAINS 2018 ALGEBRA

    PINNACLE|Exercise Exercise|23 Videos

Similar Questions

Explore conceptually related problems

A train covers a distance in 50 min, if it runs at a speed of 48 km/h on an average. The speed at which the train must run to reduce the time of journey to 40 min is

Delhi metro covers a distance in 40 min, if it runs at a speed of 48 km//h on an average. Find the speed at which the train must run to reduce the time of journey to 32 min.

A car is running at a speed of 64 km/h to cover a certain distance in 40 min. At what speed should the car run to reduce the time of the journey to 30 min? 40 मिनट में एक निश्चित दूरी तय करने के लिए एक कार 64 किमी/घंटा की चाल से चल रही है। यात्रा के समय को 30 मिनट कम करने के लिए कार को किस चाल से चलना चाहिए?

A train covers a distance of 12 km in 12 minutes, if its speed is decreased by 5 km/h, then the time taken by it to cover the distance of 22 km will be: एक ट्रेन 12 मिनट में 12 किमी की दूरी तय करती है, अगर इसकी चाल 5 किमी/घंटा कम हो जाती है, तो इसके द्वारा 22 किमी की दूरी तय करने में लगने वाला समय होगा:

A train covers a certain distance in 45 minutes. If its speed is reduced by 5 km/h, it takes 3 minutes more to cover the same distance. The distance (in km) is: एक ट्रेन कोई निश्चित दूरी 45 मिनट में तय करती है | यदि इसकी चाल 5 किमी/घंटा से कम कर दी जाए, तो इसे यह दूरी तय करने में 3 मिनट अधिक लगेंगे | यह दूरी है -

A train covers 360 km at a uniform speed. If the speed had been 10 km/h more, it would have taken 3 hours less for the same journey. What is the speed of the train (in km/h)? एक ट्रेन 360 किमी की टूरी एक समान चाल से तय करती है | यदि इसकी चाल 10 किमी/घंटा अधिक होती, तो इसे इस यात्रा में 3 घंटे कम लगते | ट्रेन की चाल ( किमी/घंटा में ) ज्ञात करें |

A train covers 400km at a uniform speed. If the speed had been 10km/h more. It would have taken 2 hrs less for the same journey. What is the usual time taken (in hours) by it to complete the journey ? एक ट्रेन एक समान चाल से 400 किमी की दूरी तय करती है। यदि चाल 10 किमी/घंटा अधिक होती तो उसी यात्रा के लिए ट्रेन को 2 घंटे कम लगते । यात्रा को पूरा करने के लिए इसके द्वारा (घंटों में) सामान्य रूप से कितना समय लगता है?

A train travels the distance between stations P and Q at a speed of 126 km/h, while in the opposite direction it comes back at 90 km/h. Another train travels the same distance at the average speed of the first train. The time taken by the second train to travel 525 km is: एक ट्रेन 126 किमी/घंटा की चाल से स्टेशनों P और Q के बीच की दूरी तय करती है, जबकि विपरीत दिशा में यह 90 किमी/घंटा की चाल से वापस आती है। दूसरी ट्रेन पहले ट्रेन की औसत चाल से समान दूरी तय करती है। 525 किमी की यात्रा के लिए दूसरी ट्रेन द्वारा लिया गया समय है:

PINNACLE-SPEED AND DISTANCE-EXERCISE
  1. Ravi starts for his school from his house on his cycle at 8 : 20 a.m. ...

    Text Solution

    |

  2. A person covers 700 m distance in 6 minutes. What is his speed in km/h...

    Text Solution

    |

  3. A train covers a distance in 30 min if it runs at a speed of 54 km/h o...

    Text Solution

    |

  4. A car covered 150 km in 5 hours. If it travels at one-third its usual ...

    Text Solution

    |

  5. Mohan finishes a journey by scooter in 5 hours. He travels the first h...

    Text Solution

    |

  6. A train of length 287m, running at 80km/h, crosses another train movin...

    Text Solution

    |

  7. A and B start moving towards each other from X and Y, respectively, at...

    Text Solution

    |

  8. A takes 2 hours more than B to cover a distance of 40km. If A doubles ...

    Text Solution

    |

  9. A person has to cover a distance of 160km in 15 hours. If he covers 4/...

    Text Solution

    |

  10. A train travelling at 36km/h crosses a pole in 25 seconds. How much ti...

    Text Solution

    |

  11. Amita travels from her house at 3 1/2 km/h and reaches her school 6 mi...

    Text Solution

    |

  12. A and B start moving from places X and Y and Y to X, respectively, at ...

    Text Solution

    |

  13. A delivery boy started from his office at 10a.m. to deliver an article...

    Text Solution

    |

  14. An athlete runs an 800 m race in 96 seconds. His speed (in km/h) is: ...

    Text Solution

    |

  15. A man travelled a distance of 42 km in 5 hours. He travelled partly on...

    Text Solution

    |

  16. A man walks at a speed of 8km/h. After every kilometer, he takes a res...

    Text Solution

    |

  17. A train x running at 74 km/h crosses another train y running at 52 km/...

    Text Solution

    |

  18. A bus covers a 50-kilometer distance in 1 hour 15 minutes, whereas the...

    Text Solution

    |

  19. A person travels a distance of 300km and then returns to the starting ...

    Text Solution

    |

  20. A person covers a distance of 300 km and then returns to the starting ...

    Text Solution

    |