Home
Class 14
MATHS
Average age of 12 students is 14 years. ...

Average age of 12 students is 14 years. If the age of teacher is also included, the average becomes 15 years. What is the age of the teacher?
12 छात्रों की औसत उम्र 14 वर्ष है | यदि शिक्षक की उम्र को भी शामिल कर लिया जाए, तो औसत 15 वर्ष हो जाता है | शिक्षक की उम्र कितनी है ?

A

23 years

B

25 years

C

27 years

D

28 years

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

PINNACLE-AVERAGE-EXERCISE
  1. An art exhibition was held in the month of november. The numbers of vi...

    Text Solution

    |

  2. The owner of a bike buys petrol at the rate of Rs. 64, Rs. 80 and Rs. ...

    Text Solution

    |

  3. Average age of 12 students is 14 years. If the age of teacher is also ...

    Text Solution

    |

  4. Average of 10 numbers is 14.8. If two numbers 5 and 23 are replaced by...

    Text Solution

    |

  5. The average weight of 13 students and their teacher is 24.5 kg. If the...

    Text Solution

    |

  6. The average of a and b is 10, average of b and c is 12 and average of ...

    Text Solution

    |

  7. In an examination, the average score of students in a class who passed...

    Text Solution

    |

  8. The average of 20 numbers is 80. The average of first 10 numbers is 76...

    Text Solution

    |

  9. The ratio of boys to girls in a class is 2 : 3 and the average score o...

    Text Solution

    |

  10. Four different numbers are given here. The average of the first three ...

    Text Solution

    |

  11. The average of 21 numbers is 44. The average of first 11 numbers is 48...

    Text Solution

    |

  12. There are 90 students in a class out of which 60% are girls and the re...

    Text Solution

    |

  13. The average marks of Madhu in four subjects is 64 and she got 69 marks...

    Text Solution

    |

  14. The average of 20 observations is 27. If each observation is multiplie...

    Text Solution

    |

  15. A person bought 15 articles @ Rs. 70 per article, 13 articles @ Rs. 60...

    Text Solution

    |

  16. The average temperature of the first three days of the week is 23^@C a...

    Text Solution

    |

  17. The average score of 30 students is 65, 36 students is 35 and 34 stude...

    Text Solution

    |

  18. The average number of pages of 9 books is 400. If the average number o...

    Text Solution

    |

  19. In a class, the number of girls is 60% more than that of boys. The ave...

    Text Solution

    |

  20. The average of 15 numbers is 45. The average of the first six numbers ...

    Text Solution

    |