The cost of a book is three times the cost of a notebook. Keshav bought five notebooks and five books for 600. Find the price of the notebook and book.
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note book =x ruppes
book =3x rupees
5x+5(3x)=600
5x+15x=600
20x=600
x=30
NOTEBOOK=30 rupees each
BOOK=90 rupees
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