Home
Class 14
MATHS
The average age of a group of 20 men is ...

The average age of a group of 20 men is 30 years. A 50 year old man leaves the group, while a woman joins the group. The average age decreases by 1 year. What is the age of the woman?
एक समूह के 20 पुरुषों की औसत आयु 30 वर्ष है | 50 वर्ष का एक व्यक्ति समूह छोड़ देता है, जबकि समूह में एक महिला शामिल हो जाती है | औसत आयु 1 वर्ष कम हो जाती है | महिला की उम्र कितनी है ?

A

40 years

B

30 years

C

35 years

D

38 years

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

PINNACLE-AVERAGE-EXERCISE
  1. What is the average of all the multiples of 6 from 20 to 80? 20 से 8...

    Text Solution

    |

  2. The average of 36, 28, 43, 56, 74, 65, 12 and x is 45. What is the val...

    Text Solution

    |

  3. The average age of a group of 20 men is 30 years. A 50 year old man le...

    Text Solution

    |

  4. The average of six observations is 15. The average of first three amon...

    Text Solution

    |

  5. The average weight of 18 boys in a group is 35 kg. If four new boys of...

    Text Solution

    |

  6. What is the average of the first 15 even numbers starting from 2? 2 ...

    Text Solution

    |

  7. The average of four numbers is 20. If the average of the first two num...

    Text Solution

    |

  8. Set A contains seven numbers and the average of these numbers is 41. S...

    Text Solution

    |

  9. Average of 11 numbers is 32. If the average of first six numbers is 26...

    Text Solution

    |

  10. The average marks of two classes M and N are 25 and 40 respectively an...

    Text Solution

    |

  11. Five years ago, the average age of 4 girls was 7 years. After includin...

    Text Solution

    |

  12. The average of 10 numbers is P and the average of 4 of these numbers i...

    Text Solution

    |

  13. The average marks obtained by a student in 9 subjects is 98. On subseq...

    Text Solution

    |

  14. A party was held for 50 people on their own expenses. Out of them, 48 ...

    Text Solution

    |

  15. The average of 25 number is zero. At most, how many of these numbers c...

    Text Solution

    |

  16. The average of 50 numbers is 75. If the average of first set of 25 num...

    Text Solution

    |

  17. The average weight of 38 students is 42 kg. It was found that the figu...

    Text Solution

    |

  18. The average of 21 data is 36 out of which the first 12 data are having...

    Text Solution

    |

  19. A cricket team has scored 156 runs in 30 overs. They need to score 275...

    Text Solution

    |

  20. The average weight of a group of eight people increased by 2.5 kg when...

    Text Solution

    |