The average age of 50 students in a class is 10years. If teacher's age is also included then average increases 1year then find the teacher's age?	Choose the correct choice from the following answers:
A) 59
B) 55
C) 61
D) 45
E) 36
Total age of 50 students = 50*10= 
<gadget id="calculator">50*10</gadget>
<output>500</output>
500   Total age of 51 persons= 51*11= 
<gadget id="calculator">51*11</gadget>
<output>561</output>
561   Age of teacher= 561-500= 
<gadget id="calculator">561-500</gadget>
<output>61</output>
61years   Answer is 61
<result>C</result>
The average age of 50 students in a class is 10years. If teacher's age is also included then average increases 1year then find the teacher's age?