The average age of an adult class is 40 years. 12 new students with an avg age of 32 years join the class. Therefore decreasing the average by 6 year. Find what was the original average age of the class?	Choices:  A) 10  B) 12  C) 16  D) 20  E) 4
Let original strength = y   Then , 40y + 12 x 32 = ( y + 12) x 34   â‡’ 40y + 384 = 34y + 408   â‡’ 6y = 24   âˆ´ y = 4   4
<result>E</result>
The average age of an adult class is 40 years. 12 new students with an avg age of 32 years join the class. Therefore decreasing the average by 6 year. Find what was the original average age of the class?