Home
Class 8
MATHS
Solve the following : A car travelling...

Solve the following :
A car travelling at 72 km/h covers al certain distance in 6 hours. What should be the decrease in speed, if the same distance is to be covered ini 8 hours ? What time will it take to cover the same distance at the speed of 90 km/h?

Text Solution

Verified by Experts

18 km/h, 4.8 hours
Promotional Banner

Topper's Solved these Questions

  • SURFACE AREA AND VOLUME

    NAVNEET PUBLICATION|Exercise QUESTION BANK|45 Videos

Similar Questions

Explore conceptually related problems

A car with speed 60 km/h takes 8 hours to travel some distance. What should be the increase in the speed, if the same distance is to be covered in 7 1/2 hours?

A car with a uniform speed travels a distance of 165 km in 3 hours. At that same speed, how long will it take to cover a distance of 330 km?

Solve the following examples: (numerical problems) A person travels a distance of 72 km in 4 hours. Calculate the average speed in m/s .

Solve the following : A car running at a certain speed covers a distance of 48 km using 3 litres of petrol. How much distance will it cover using 4.5 litres of petrol at the same speed ?

A car takes 20 minutes to cover a distance of 94 km. Find its speed in m/s .

A car takes 4 hours to cover a certain distance at the speed of 30km/h. If the speed of the car is increased, will it take more or less time to cover the same distance ?

Answer the following: (Any 3) A person travels a distance of 72 km in 4 hours. Calculate average speed in m/s

NAVNEET PUBLICATION-VARIATION-QUESTION BANK
  1. Find the constant of variation and the equation of variation in the fo...

    Text Solution

    |

  2. Find the constant of variation and the equation of variation in the fo...

    Text Solution

    |

  3. Find the constant of variation and the equation of variation in the fo...

    Text Solution

    |

  4. Find the constant of variation and the equation of variation in the fo...

    Text Solution

    |

  5. Find the constant of variation and the equation of variation in the fo...

    Text Solution

    |

  6. Solve the following : xalphay, x = 8 when y = 6, Find y when x = 12.

    Text Solution

    |

  7. Solve the following : yalphax, y = 2 when x = 6. Find x when y = 5

    Text Solution

    |

  8. Solve the following : palphasqrtq,p = 2 when q =9. Find p when q=9/4...

    Text Solution

    |

  9. Solve the following : yalphax. When x = 5,y= 12. Find y when x = 7...

    Text Solution

    |

  10. Solve the following : yalphax. When x = 5,y= 12. Find x when y = 8...

    Text Solution

    |

  11. Solve the following : IalphaN. When I = 350, N = 4. Find I when N ...

    Text Solution

    |

  12. Solve the following : IalphaN. When I = 350, N = 4. Find N when I ...

    Text Solution

    |

  13. Solve the following : xalphasqrty.When x = 35, y = 49. Find x when...

    Text Solution

    |

  14. Solve the following : xalphasqrty.When x = 35, y = 49. Find y whe...

    Text Solution

    |

  15. Solve the following : xalpha1/root3y. When x = 5. y = 8. Find y wh...

    Text Solution

    |

  16. Solve the following : xalpha1/root3y. When x = 5. y = 8. Find x wh...

    Text Solution

    |

  17. Solve the following : A car running at a certain speed covers a dist...

    Text Solution

    |

  18. Solve the following : A packing machine can pack 144 boxes of toothp...

    Text Solution

    |

  19. Solve the following : A car travelling at 72 km/h covers al certain ...

    Text Solution

    |

  20. Solve the following : 420 workers take 15 days to complete a piece o...

    Text Solution

    |