The average age of an adult class is 40 years. 12 new students with an avg age of 34years join the class. Therefore decreasing the average by 4 years. Find what was the original average age of the class? Answers:	A) 6	B) 12	C) 16	D) 20	E) 22
Let original strength = y   Then , 40y + 12 x 34 = ( y + 12) x 36   â‡’ 40y + 408 = 36y + 432   â‡’ 4y = 48   âˆ´ y = 6   6
<result>A</result>
The average age of an adult class is 40 years. 12 new students with an avg age of 34years join the class. Therefore decreasing the average by 4 years. Find what was the original average age of the class?