The average age of a class of 14 students is 10 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher Select the correct option
A) 30 Years B) 31 Years C) 32 Years D) 34 Years E) 25 Years
Total age of students is 14X10 = 140 Years   Total age inclusive of teacher = 15X (10+1) = 165   So, Teacher's age is 165-140= 
<gadget id="calculator">165-140</gadget>
<output>25</output>
25 Yrs   There is a shortcut for these type of problems   Teacher's age is 10+(15X1)= 25 Years   25 Years
<result>E</result>
The average age of a class of 14 students is 10 yrs. if the teacher's age is also included, the average increases by one year. Find the age of the teacher