Home
Class 10
MATHS
Average monthly income of 50 persons is ...

Average monthly income of 50 persons is Rs 270.00 . Later on it is found that the income of a person, which is correctly Rs. 243, but wrongly taken as Rs. 213 . Find the correct average.

Promotional Banner

Topper's Solved these Questions

  • MEASURES OF CENTRAL TENDENCY

    CALCUTTA BOOK HOUSE|Exercise EXERCISE|36 Videos
  • CONSTRUCTION: CONSTRUCTION OF TANGENT TO A CIRCLE

    CALCUTTA BOOK HOUSE|Exercise Exercise-8.2|5 Videos
  • MEDIAN AND MODE

    CALCUTTA BOOK HOUSE|Exercise EXERCISE|20 Videos

Similar Questions

Explore conceptually related problems

The mean and SD of the scoreing marks of 100 students are 40 and 5.1 resp. on checking it was discovered that the score which should correctly read as 40 had been wrongly taken as 50. Find the correct values of mean and SD

The average mark obtained by 100 students is 40. But is was later found that the mark of one student was wrongly written as 83 instead of 53. Find the value of the actual mean.

The mean and S.D. of 20 items were found to be 12 and 6 respectively. On checking it was discovered that items which should correctly read as 11 and 21 had been wrongly taken as 15 nd 27 respectively. Find the correct values of mean and S.D.

There are 50 workers in a small industry. The dialy income of them is Rs. 9 Amongst them, the daily income of the 30 workers, working in the morning is Rs. 8 . Then find the daily average income of workers working in the evening.

The median and mode of the 61 values of a variable are 17 and 19 respectively. Later on, it is seen that one of the value is wrongly taken as 13, the correct value of which is 16. Find the correct values of median and mode.

The total monthly salary of two persons is RS 7500. They spend 90% and 80% of their salaries respectively. If the ratio of their monthly savings is 3:4, find their monthly salaries.

The arithmetic mean of 200 values of a variable is 50. Later on, it is found that two values 92 and 8 have been taken wrongly instead of 192 and 88 respectively . After correction , find the actual arithmetic mean of the given values.

The average and median of daily incomes of 500 workers are Rs.2.80 and Rs.3.15, then find the approximate value of the mode of the daily incomes of the workers.

Find the average of the variable. The incomes of three friends are :Rs. 325, Rs. 927 and Rs. 630.

The income of a person is Rs. 3,00,000, in the first year and he receives an increase of Rs.10,000 to his income per year for the next 19 years. Find the total amount, he received in 20 years.

CALCUTTA BOOK HOUSE-MEASURES OF CENTRAL TENDENCY-EXERCISE
  1. The frequency distribution of the monthly incomes (in rupees) of the w...

    Text Solution

    |

  2. The average of weights (in kg) and the number of students of a school ...

    Text Solution

    |

  3. The arithmetic mean of the marks obtained in 8 different subjects in a...

    Text Solution

    |

  4. The average of the collective ages of 4 classes in a school is 8.5 yea...

    Text Solution

    |

  5. If the average temperature of a place be 105.5^(@) F in Fahrenheit sca...

    Text Solution

    |

  6. Donations (in rupees) are given for a fare by the 100 students of a sc...

    Text Solution

    |

  7. Find the average height of the students from the given table.

    Text Solution

    |

  8. Find the average income (in rupees) of the workers from the following ...

    Text Solution

    |

  9. The frequency distribution of the marks obtained in a school is given ...

    Text Solution

    |

  10. Part of the weekly expenditure of 1000 families is given in the follow...

    Text Solution

    |

  11. Average monthly income of 50 persons is Rs 270.00 . Later on it is fou...

    Text Solution

    |

  12. The monthly salaries of 20 employees of a commercial enterprise are gi...

    Text Solution

    |

  13. The number of students in a class is 60 . The average of the ages of t...

    Text Solution

    |

  14. The arithmetic mean of two numbers is 10 and their geometric mean is 8...

    Text Solution

    |

  15. Find the geometric mean of the 2(2)/(7), 3, 1(3)/(4) and 1(1)/(3)

    Text Solution

    |

  16. Find the geometric mean of the 45,20,12,75 and 30

    Text Solution

    |

  17. If the arithmetic mean of two numbers be 10 and their harmonic mean is...

    Text Solution

    |

  18. A person have to go 4 kilometers away from a city. He has to go 2 kilo...

    Text Solution

    |

  19. While ascending a mountain, a car go 8 kilometre consuming one litre o...

    Text Solution

    |

  20. The average weight of the following frequency distribution is 58.5 kil...

    Text Solution

    |