Total cost of 14 pens and 21 books is Rs. 130 and the total cost of 6 pens and p books is Rs. 90. Which of the following cannot be the value of p ?
Total cost of 14 pens and 21 books is Rs. 130 and the total cost of 6 pens and p books is Rs. 90. Which of the following cannot be the value of p ?
A) 4
B) 6
C) 10
D) 9
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