RRB GROUP D MOST PROBABLE - AVERAGE QUIZ-18

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Question 1:

The average weight of the boys in a class is $69.3 \mathrm{~kg}$ and and that of the girls in the same class is $59.4$. If the average weight of all the boys and girls in the class is $63.8 \mathrm{~kg}$, then the percentage of the number of boys in the class is:

Question 2:

The average weight of 39 students of a class is 40 kg. If the weight of the teacher is included, the average weight rises by $500 \mathrm{gm}$. What is the weight of teacher?

Question 3:

The average of 29 consecutive numbers is 48 . The largest of these numbers is:

Question 4:

The average weight of Amit, Amrita and Amitabh is $55 \mathrm{~kg}$, if the average weight of Amit and Amrita is $52.5 \mathrm{~kg}$ and average weight of Amrita and Amitabh is $50 \mathrm{~kg}$ then find the weight of Amrita (in kg).

Question 5:

Find the average of first 12 odd numbers?

Question 6:

The average age of children in a family is 6 years and the average age of 12 the eldest is 40 years. If the average age of the group of all the children and the eldest is 7 years, then find the total number of children?

Question 7:

In a series of ten consecutive integers, the average of the two numbers that appear in the middle is $14.5$, then what is the sum of all ten integers?

Question 8:

The average of all odd numbers from 183 to 297 is ….

Question 9:

In a class, there are 15 students at the age of 18 years, 12 students at the age of 23 years and 7 students at the age of 13 years. What is the average age of a student?

Question 10:

The average of 21, 28 and $x$ is 54. What is the value of $\mathrm{x}$?