Miscellaneous Question 5
- The cost of 14 keyboards and 8 mouse-pads is $₹ 26240$. What is the cost of 35 keyboards and 20 mouse-pads?
(1) ₹ 65,600
(2) ₹ 58,800
(3) ₹ 76,550
(4) Cannot be determined
(5) None of these
(IBPS RRBs Office Assistant CWE Exam. 09.09.2012)
Show Answer
Correct Answer: 5. (1)
Solution: 5. (1) Let C.P. of 1 key board $=₹ x$. C.P. of 1
mouse pad $=₹ y$
$\therefore 14 x+8 y=26240$
Dividing both sides by 2 ,
$7 x+4 y=13120$
Multiplying both sides by 5 ,
$35 x+20 y=65600$
BETA
