The cost b of a book is 13 more than the cost
of a pen. The cost of the pen is 8 less than the
cost r of a register. If the register costs 80,
find the cost of the book and the pen.
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The cost b of a book is 13 more than the cost
of a pen. The cost of the pen is 8 less than the
cost r of a register. If the register costs 80,
find the cost of the book and the pen.
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Step-by-step explanation:
the cost of register = rs 80
the cost of pen is 8 less than the cost of register
the cost of pen = 80 - 8 = 72
the cost of book is 13 more than the cost of pen
the cost of book = 72 + 13 = 85
hence the cost of book is rs 85 and the cost of pen is rs 72 .
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