Average Ques 4
Question-
X’s age 3 years ago was three times the present age of Y. At present, $Z$ ’s age is twice the age of $Y$. Also $Z$ is 12 years younger than $X$. What is the present age of $Z$ ?
(1) 15 years
(2) 24 years
(3) 12 years
(4) 6 years
(5) 18 years
(IBPS RRBs Officer Scale-I & II CWE 13.09.2015)
Show Answer
Correct Answer: (5)
Solution: (5)
Y’s present age $=y$ years (let)
$\therefore X$ ’s present age $=(3 y+3)$ years
$\therefore Z$ ’s present age $=2 y$ years
According to the question,
$3 y+3-2 y=12$
$y+3=12$
$\Rightarrow y=12-3=9$ years
$\therefore Z$ ’s present age $=2 y$
$=2 \times 9=18$ years
BETA
