Average MCQs

Ras Bihari, a plumber, earned on an average Rs. 925 per day in the month of January. He earned on an average Rs. 881 per day during the first 20 days and Rs. 915 per day during the last 20 days. What was his average income (in Rs.) per day from 12th January to 20th January?

The total number of students in section A and B of a class is 110. The number of students in section A is 10 more than that of section B. The average score of the students in B, in a test, is 20% more than that of students in A. If the average score of all the students in the class is 72, then what is the average score of the students in A?

The average of thirteen numbers is 80. The average of the first five numbers is 74.5 and that of the next five numbers is 82.5. The 11th number is 6 more than the 12th number is 6 less than the 13th number. What is the average of the 11th and the 13th numbers?

Average of all even numbers between 222 and 250 is . . . . . . . .

Average of first five odd multiples of 3 is

The average of 33 numbers is 74. The average of the first 17 numbers is 72.8 and that of the last 17 numbers is 77.2. If the 17th number is excluded, then what will be the average of the remaining numbers (correct to one decimal place)?

The arithmetic mean (average) of the first 10 whole number is

Find the weighted arithmetic mean of the first 'n' natural numbers, the weights being the corresponding numbers.

The average of three numbers a, b and c is 2 more than c. The average of a and b is 48. If d is 10 less than c, then the average of c and d is: