Three numbers are in the ratio 4 : 5 : 6 and their average is 25. The largest number is · ABC26GN1680
Subject: General Aptitude · Chapter: Problems on Numbers
Three numbers are in the ratio 4 : 5 : 6 and their average is 25 . The largest number is
(a)30
(b)32
(c)36
(d)42
Answer
Answer (as printed): A
Explanation
Let the numbers be $4 x, 5 x$ and $6 x$. Then, $\frac{4 x+5 x+6 x}{3}=25 \Leftrightarrow 5 x=25 \Leftrightarrow x=5$. $$\therefore \quad \text { Largest number }=6 x=30 .$$
Explanation as extracted from the printed page; notation may be imperfect.