Rahul went to buy textbooks for school and bought 17 textbooks with the money he had. Had the books been more expensive by Rs. 10 each, he would have been able to buy only 15. What is the cost per textbook when he bought 17 of them?

Question

Pv Aaditya · Accepted Answer

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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Rahul went to buy textbooks for school and bought 17 textbooks with the money he had. Had the books been more expensive by Rs. 10 each, he would have been able to buy only 15. What is the cost per textbook when he bought 17 of them?