If average of two positive number is 2 initially and one number is replaced then the average became twice the initial average. What is number replace.  Choose the correct choice.
A) 1  B) 2  C) 3  D) 6  E) 5
Since the average is 2 which gives (x+y)/2 = 2. X+Y = 4   the numbers must be 1+3 so if you replace 1 by 5 then average becomes 4   1nswer: 1
<result>A</result>
If average of two positive number is 2 initially and one number is replaced then the average became twice the initial average. What is number replace.