ABC26GN1531 · Average

Subject: General Aptitude · Chapter: Average · Exam: 2006 · Marks: · Difficulty:

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.

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