The cost of 16 pens and 8 pencils is Rs.352 and the cost of 4 pens and 4 pencils is Rs.96. Find the cost of each
pen?
Rs.32
Rs.28
Rs.36
None of these
Explanation:
Let the cost of each pen and pencil be `p` and `q` respectively.
16p + 8q = 352 --- (1)
4p + 4q = 96
8p + 8q = 192 --- (2)
(1) - (2) $\Rightarrow$ 8p = 160
$\Rightarrow$ p = 20
Let the cost of each pen and pencil be `p` and `q` respectively.
16p + 8q = 352 --- (1)
4p + 4q = 96
8p + 8q = 192 --- (2)
(1) - (2) $\Rightarrow$ 8p = 160
$\Rightarrow$ p = 20