He will be left no money after buying 25 copies because he has 1900 rupees less.
Given that Usman buys 8 books that cost Rs. 120/ each, he will be left Rs. 140.
The cost of 1 books is Rs 120.
The cost of 8 book is 120×8=960.
The cost of 25 books is 120×25=3000
To find the money usman will left with him is the difference between the total money and the cost of 25 books.
Total money=960+140=1100
money left=Total money -cost of 25 books
money left=1100-3000
Usman have less money to buy 25 books. He has 1900 rupees less to buy 25 books.
Hence, Usman does leave any money with even he has less money to buy 25 books
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