Average Ques 10
Question-
The average of four consecutive even numbers $P, Q, R$ and $S$ respectively (in increasing order) is 51 . What is the product of $P$ and $R$ ?
(1) 2592
(2) 2400
(3) 2600 BC
(4) 2808
(5) None of these
(IBPS RRBs Office Assistant CWE Exam. 09.09.2012)
Show Answer
Correct Answer: 5
Solution: (5)
$x+x+2+x+4+x+6$ $=4 \times x + 12$
$\Rightarrow 4 x+12=204$
$\Rightarrow 4 x=204-12=192$
$\Rightarrow x=\frac{192}{4}=48=P$
$\therefore R=48+4=52$
$\therefore P \times R=48 \times 52=2496$
BETA
