The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1. If the average score of the boys is A + 1, the average score of the girls is-
Quiz Recommendation System API Link - https://fresherbell-quiz-api.herokuapp.com/fresherbell_quiz_api
# | Quiz |
---|---|
1
Discuss
|
In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?
Solution |
2
Discuss
|
Find the average increase rate, if increase in the population in the first year is 30% and that in the second year is 40%.
Solution |
3
Discuss
|
Find the average of first 97 natural numbers.
Solution |
4
Discuss
|
If 25a + 25b = 115, what is the average of a and b?
Solution |
5
Discuss
|
The average age of 30 students of a class is 14 years 4 months. After admission of 5 new students in the class the average becomes 13 years 9 months. The youngest one of the five new students is 9 years 11 months old. The average age of the remaining 4 new students is :
Solution |
6
Discuss
|
The average of six number is x and the average of three of these is y. the average of the remaining three is z, then
Solution |
7
Discuss
|
3 years age, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is :
Solution |
8
Discuss
|
The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculated average weight per ball increases by 0.3 g. What is the weight of the bag?
Solution |
9
Discuss
|
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-
Solution |
10
Discuss
|
The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5°C. If the mean of the whole week is 25.2°C then the temperature of the 4th day is :
Solution |
# | Quiz |
Copyright © 2020 Inovatik - All rights reserved