ICSE Class 10 Answered
A man brought some books fir ruppees 1200when the price of each rose by rupees 30 he could buy 2 books less for ruooees 1200find the original prucr of the book
Asked by bhumikav668 | 22 Jul, 2020, 15:51: PM
Let the price of each books be Rs. x
So, the no. of books purchased = 1200/x
Price of each book is increased by Rs. 30
Number of books purchased = 1200/x+30
After increasing the price, he could by 2 books less
Therefore, we have
![1200 over straight x minus fraction numerator 1200 over denominator straight x plus 30 end fraction equals 2
rightwards double arrow 1200 left parenthesis straight x plus 30 minus straight x right parenthesis equals 2 left parenthesis straight x squared plus 30 straight x right parenthesis
rightwards double arrow 18000 equals straight x squared plus 30 straight x
rightwards double arrow straight x squared plus 30 straight x minus 18000 equals 0
rightwards double arrow straight x equals fraction numerator negative 30 plus-or-minus 270 over denominator 2 end fraction equals negative 150 space space or space space 120
Hence comma space original space price space of space the space book space is space Rs. space 120.](https://images.topperlearning.com/topper/tinymce/cache/157c30684fb6043979d952e83876b4e5.png)
Answered by Renu Varma | 27 Jul, 2020, 13:52: PM
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