Home
Class 14
MATHS
In a class there are 32 boys and 28 g...

In a class there are 32 boys and 28 girls. The average age of the boys in the class is 14 years and the average age of the girls in the class is 13 years. What is the average age of the whole class (rounded to two digits after decimal)? (a) 12.51    (b) 13.42    (c) 13.50    (d) 13.53    (e) 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 age of r boys in a class is a years. If the average age of s of them is b years, them what is the average age of the remaining boys ?

The average age of 12 boys is 15 years and the average age of 18 girls is 12 years .What is the conbined average age of the boys and girls ,taken together ?

The average age of 15 boys in a class is 11 years 3 months. If A boy of 12 years and 7 months join that class, what will be the average age of the boys in the class?

The average age of 33 boys and the class teacher in a class is 14 years. If the class teacher's age is 47 years. What would the average age of only the boys ?

There are 30 students in a class .The average age of the first 10 students is 12.5 years .The average age of the remaining 20 students is 13.1 years .What is the average age (in years ) of the students of the whole class ?

RS AGGARWAL-AVERAGE-All Questions
  1. A family consists of grandparents, parents and three grandchildren....

    Text Solution

    |

  2. A library has an average of 510 visitors on Sundays and 240 on othe...

    Text Solution

    |

  3. In a class there are 32 boys and 28 girls. The average age of the b...

    Text Solution

    |

  4. The average weight of 16 boys in a class is 50.25 kgs and that of t...

    Text Solution

    |

  5. The mean of 5 observations is 60, the mean of 10 observations is 30...

    Text Solution

    |

  6. The average expenditure of a man for the first five months of a yea...

    Text Solution

    |

  7. A school has 4 sections of Chemistry in Class X having 40, 35, 45 a...

    Text Solution

    |

  8. If the average of m numbers is n^2 and that of n numbers is m^2 ...

    Text Solution

    |

  9. The average of five consecutive numbers is x . If the next two n...

    Text Solution

    |

  10. A person purchases 1 kg of tomatoes from each of the 4 places at th...

    Text Solution

    |

  11. In a certain factory there are five workers A ,\ B ,\ C ,\ D and E ...

    Text Solution

    |

  12. A car owner buys petrol at Rs 17, Rs 19 and Rs 20 per litre for thr...

    Text Solution

    |

  13. The average of six numbers is x and the average of three of thes...

    Text Solution

    |

  14. Out of 9 persons, 8 persons spent Rs 30 each for their meals. The n...

    Text Solution

    |

  15. There were 35 students in a hostel. If the number of the students i...

    Text Solution

    |

  16. The average price of three items of furniture is Rs 15000. If their...

    Text Solution

    |

  17. Of the four members, the first is twice the second, the second is o...

    Text Solution

    |

  18. Out of three numbers, the first is twice the second and is half of ...

    Text Solution

    |

  19. Of the three numbers, the first is twice the second and the second ...

    Text Solution

    |

  20. Of the three numbers, the average of the first and the second is gr...

    Text Solution

    |