R. Gupta Solutions for Exercise 1: EXERCISE

Average of class I to class V is $29$. Average of class I to class III is $31$. Average of class IV to class V is:

The average age of a group of $13$ boys is $13$ years. When two more boys joined the group, the average rose by $2$ years. The sum of the ages of the two new boys is:

A boy of height $165$ cm is replaced by another, which decreases the average height of the group of  $34$ boys by $1$ cm. The height of the new boy is:

The average of five consecutive even numbers, starting with $2$, is:

The average of $4$,$5$, $3.5$, $7.5$, $9.5$ and $6.5$ is :

The average of $8$ numbers is $12$. If each number is increased by $2$, the average of the new set of numbers is:

The weights of $5$ balls in gms are as under $50$, $54$, $53$, $56$, $52$. The average weight is:

The lengths of $5$ pieces of a string in cms are : $5$, $5.2$, $6.3$, $7.2$,$6.3$. The average length of a piece is: