Home
Class 14
MATHS
The average weight of 45 students in ...

The average weight of 45 students in a class is 52 kg. Five of them whose average weight is 48 kg leave the class and other 5 students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class? `52 1/3` (b) `52 1/2` (c) `52 2/3` (d) None of these

Promotional Banner

Topper's Solved these Questions

  • AREA

    RS AGGARWAL|Exercise All Questions|473 Videos

  • BANKERS DISCOUNT

    RS AGGARWAL|Exercise All Questions|20 Videos

Similar Questions

Explore conceptually related problems

The average weight of 45 students in a class is 52 kg. 5 of them whose average weight is 48 kg leave the class and other 5 students whose average weight is 54 kg join the class. What is the new average weight (in kg) of the class?

The average weight of 90 girls in a class is 20. The average weight of a group of 16 girls in the class is 12 kg and the average weight of another 34 girls in the class is 16. What is the average weight of the remaining girls in the class ?

The average weight of 25 students of a class is 28 kg. If the average weight of all the boys is 30 kg and average weight of all the girls is 25 kg, then find the number of boys in the class.

The average weight of 55 students is 55 kg , and the average weight of another 45 students is 45 kg . Find the average weight of all the students .

The average weight of 30 students in a class is 25kgs. If the weight of the class teacher is added, the average weight increase by 2kgs. The weight of the class teacher (in kgs) is A. 86 B. 84 C. 81 D. 87

The mean weight of 60 students of a class is 52.75 kg. If the mean weight of 25 of them is 51 kg., find the mean weight of remaining students.

RS AGGARWAL-AVERAGE-All Questions
  1. The average weight of 8 men is increased by 1.5 kg when one of the men...

    Text Solution

    |

  2. There were 24 students in a class. One of them, who was 18 years ol...

    Text Solution

    |

  3. The average weight of 45 students in a class is 52 kg. Five of them...

    Text Solution

    |

  4. The average height of 25 boys is 1.4 m. When 5 boys leave the group...

    Text Solution

    |

  5. The average of 11 players of a cricket team is decreased by 2 month...

    Text Solution

    |

  6. The average age of an adult class is 40 years. 12 new students with...

    Text Solution

    |

  7. In a class with a certain number of students, if one student weighi...

    Text Solution

    |

  8. When 15 is included in a list of natural numbers, their mean is inc...

    Text Solution

    |

  9. The captain of a cricket team of 11 members is 26 years old and the...

    Text Solution

    |

  10. A batsman makes a score of 84 runs in the 21st inning and thus incr...

    Text Solution

    |

  11. A cricketer whose bowling average is 12.4 runs per wicket takes 5 w...

    Text Solution

    |

  12. A team of 8 persons joins in a shooting competition. The best marks...

    Text Solution

    |

  13. A motorist travels to a place 150 km away at an average speed of 50...

    Text Solution

    |

  14. The average weight of 3 men A ,\ B and C is 84 kg. Another man D...

    Text Solution

    |

  15. The average age of a husband and his wife was 23 years at the time ...

    Text Solution

    |

  16. Four years ago, the average age of A and B was 18 years. At pres...

    Text Solution

    |

  17. Five years ago the average age of A ,\ B ,\ C ,\ D was 45 years....

    Text Solution

    |

  18. The average age of husband, wife and their child 3 years ago was 27...

    Text Solution

    |

  19. The average age of a husband and wife at the time of their marriage...

    Text Solution

    |

  20. When the average age of a couple and their son was 42 years, the so...

    Text Solution

    |