Question

. 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. If the registar costs Rs.80, find
the cost of the book and the pen.​

Answer 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