The cost of 6 pens is 10 more than 5 marker's cost. The 12 pens is Rs.240.
Choose the most appropriate option
A) Rs.11  B) Rs.42  C) Rs.24  D) Rs.110  E) Rs.22
Let the cost of each pen and marker be 'p' and 'q' respectively.   6p - 5q = 10 --- (1)   12p= 240 . P=20   6p - 5q = 10 --- (2)   120-5q =10   =&gt;5q = 110   =&gt; q=22   ANSWRs.22R:Rs.22
<result>E</result>
The cost of 6 pens is 10 more than 5 marker's cost. The 12 pens is Rs.240.