The average of two numbers is X Y. If one number is X, the other is · ABC26GN1531

Subject: General Aptitude · Chapter: Average · Exam: R.R.B. 2006

The average of two numbers is $X Y$. If one number is $X$, the other is

(a)$\frac{Y}{2}$

(b)$Y$

(c)$2 X Y-X$

(d)$X(Y-1)$

Answer

Answer (as printed): C

Explanation

Sum of numbers $=2 X Y$. ∴ Other number $=2 X Y-X$.

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for Average