The average age of $10$ men is increased by $2 \,years$ when one of them of $25 \, years$ age, is replaced by new man. What is the age of new man? (in $years$)

A batsman score $98$ runs in the $17^{\text {th }}$ match of his career. His average runs per match increase by $2.5$ What is his average before the $17^{\text {th }}$ match?

The average marks in English subject of a class of $24$ students is $56 .$ If the marks of three students were misread as $44,45$ and $61$ of the actual marks $48,59$ and $67,$ respectively, then what would be the correct average?

$A , B , C$ and $D$ are four consecutive even numbers respectively and their average is $65 .$ What is the product of $A$ and $D ?$

A cricketer had a certain average of runs for his $64$ innings. In his $65^{th}$ innings, he is bowled out for no score on his part. This brings down his average by $2$ runs. His new average of runs is?

The average marks obtained by a class of $60$ students is $05.$ The average marks of half of the students is found to be $85 .$ The average marks of the remaining students is