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The cost of 12 note-books and 16 pens is Rs. 852. What is the cost of 9 note-books and 12 pen?
- ARs. 743
- BRs. 639
- CRs. 567
- DCannot be determined
Answer not set
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0
CCommunity
Solution
Let the cost of a note-book = Rs. $x$
and cost of a pen = Rs. $y$
=> $12x + 16y = 852$
Multiplying the above equation by $(\frac{3}{4})$, we get :
=> $\frac{3}{4} \times (12x + 16y = 852)$
=> $9x + 12y = 639$
$\therefore$ Cost of 9 note-books and 12 pens is Rs. 639
Let the cost of a note-book = Rs. $x$
and cost of a pen = Rs. $y$
=> $12x + 16y = 852$
Multiplying the above equation by $(\frac{3}{4})$, we get :
=> $\frac{3}{4} \times (12x + 16y = 852)$
=> $9x + 12y = 639$
$\therefore$ Cost of 9 note-books and 12 pens is Rs. 639
0
CCommunity
Solution
Let the cost of a note-book = Rs. $x$
and cost of a pen = Rs. $y$
=> $12x + 16y = 852$
Multiplying the above equation by $(\frac{3}{4})$, we get :
=> $\frac{3}{4} \times (12x + 16y = 852)$
=> $9x + 12y = 639$
$\therefore$ Cost of 9 note-books and 12 pens is Rs. 639
Let the cost of a note-book = Rs. $x$
and cost of a pen = Rs. $y$
=> $12x + 16y = 852$
Multiplying the above equation by $(\frac{3}{4})$, we get :
=> $\frac{3}{4} \times (12x + 16y = 852)$
=> $9x + 12y = 639$
$\therefore$ Cost of 9 note-books and 12 pens is Rs. 639