KVS MATHS QUIZ 43 (AVERAGE)

Attempt now to get your rank among 32 students!

Question 1:

The average of eight consecutive numbers is $10.5$. The largest number is:

Question 2:

Three numbers are in the ratio $2: 3: 4$. The sum of their squares is 2349 . Find the average of these three numbers.

Question 3:

Three years ago, the average age of A, B and C was 29 years. If the average age of B and C, 5 years ago, was 23 years, then what is the present age (in years) of A?

Question 4:

The average  marks of 35 students in a class examination is 46. Later, it was found that the marks of two students each were read as 33 instead of 23, and that of one student was read as 30 instead of 36. Find the actual average marks of the students of the class.

Question 5:

The average age of the students in a school is 13.2 years. The average age of the boys is 14.4 years and that of the girls is 12.3 years. The ratio of the number of girls to that of the boys is:

Question 6:

The average score of a group of students in a test is 64 . If 20 % students obtained an average score of 91 and 25% students obtained an average score of 31 , then what is the average score (correct to one decimal place) of the remaining students?

Question 7:

A library has an average of 240 visitors on Sundays and 150 visitors on other days. The average number of visitors per day in a month of 30 days, which begins with Monday, is:

Question 8:

The average of seven odd numbers, taken in increasing order, is 79 . What is the average of the first five numbers?

Question 9:

The difference between the average of all those numbers between 50 and 7 which are divisible by 6 and the average of all prime numbers between 10 and 45 is

Question 10:

The average of 19 numbers is 46 . The average of the first 5 numbers is 49 and the average of the next 6 numbers is 54 . What is the average of the remaining numbers ? (Correct to one decimal place)

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