A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?

Arithmetic Mcqs Average Mcqs Basic Maths Mcqs 18/07/2020

A. 28 4/7 years
B. 31 5/7 years
C. 32 1/7 years
D. None of these

Explanation:

Required Average = [(67 * 2) + (35 * 2 ) + (6 * 3)]/(2 + 2 + 3)

= (134 + 70 + 18)/7 = 31 5/7 years.

Related Mcqs:

    The average of first ten prime numbers which are odd is____________?
    A. 12.9 B. 13.8 C. 15.8 D. 17 Explained by: M. Zeeshan Saleem...
    The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?
    A. 40 degrees B. 38 degrees C. 36 degrees D. 34 degrees...
    Three years ago the average age of a family of six members was 19 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?
    A. 1 year B. 1.5 years C. 2 years D. 2.5 years...
    Find the average of the series : 312, 162, 132, 142 and 122?
    A. 194 B. 174 C. 162 D. 186...
    The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
    A. 45 B. 50 C. 51.4 approx. D. 54.6 approx....

Leave a Reply

Your email address will not be published. Required fields are marked *