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Satyababu went to the market taking Rs. ...

Satyababu went to the market taking Rs. 60 in his pocket to buy some note books (khata) and dot-pens. He found the market prices of the articles to be such that if he purchased 15 note-books, then with the rest of the money he could buy 6 dot-pens . But if he purchased 12 note-books and 7 dot-pens , Rs 1 would be left for him . What were the market prices of the articles ?

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The correct Answer is:
The price of each note-book is Rs. 2 and the price of each dot-pen is Rs 5;3
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS IN REAL PROBLEMS-EXERCISE-5
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  15. If 2 is subtracted from the numerator and 3 is added to the denominato...

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