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8 years, 7 months ago
8 years, 7 months ago
Let the price of a textbook be P
Total money with Rahul = 17P
New price of each textbook = P+10
Total money with Rahul = (P+10)*15 = 17P
=> 15P + 150 = 17P
=> 2P = 150
=> P = 75
So, cost of each textbook = Rs 75
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