Arihant Expert Team Solutions for Exercise 1: MULTIPLE CHOICE QUESTIONS AND ANSWERS

The average attendance of a college for the first three days of a week is $325$ and for the first four days is $320$. How many were present on the fourth day?

The average age of students in a class of $20$ is $15.6$ years. What will be the average age if $5$ new students come whose average age is $15.4$?

The average weight of $10$ men is increased by $1.5 kg$ when one of the men who weighs $68 kg$ is replaced by a new man. Find the weight of the new man.

The average expenditure of a man for the first five months is $Rs. 1200$ and for the next seven months is $Rs. 1300$. Find his monthly average income if he saves $Rs. 2900$ during the year.

The average weight of $36$students is $50 kg$. It was found later that the figure of $37 kg$was misread as $73 kg$. The correct average is:

The average salary of a staff $18$ officers and $32$clerks is $Rs 8000$. If the average salary of an officer is $Rs 12,000$, then the average salary of a clerk is:

A candidate scores an aggregate of $60\%$ marks, scoring an average of $56\%$ in $4$of the papers and $68\%$ in the others. How many papers were there in all?

The average of the first $5$prime numbers greater than $60$is: