The average of 2,7,6 and x is 5 and the average of 18,1,6,x and y is 10. What is the value of y ?	Choose the correct choice:
A) 5	B) 10	C) 20	D) 30	E) 40
Answer C   Solution   We have :(2+7+6+X/4) = 5 or 15+x = 20 or x=5   Also, (18+1+6+X+Y/5) = 10 or 25+5+y = 50 or y=20. Answer 20
<result>C</result>
The average of 2,7,6 and x is 5 and the average of 18,1,6,x and y is 10. What is the value of y ?