. The cost b of a book is Rs. 13 more than the cost of a pen. The cost of the
pen is Rs.8 less than the cost of a registar. I

1 thought on “. The cost b of a book is Rs. 13 more than the cost of a pen. The cost of the<br />pen is Rs.8 less than the cost of a registar. I”

1. Answer:

   cost of book = ₹85

   cost of pen = ₹ 72

   Step-by-step explanation:

   cost of register = ₹80

   then cost of pen = ₹80 – ₹ 8

   = ₹72

   now cost of book = ₹72 +₹13

   = ₹85

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