RFO Tripathi bought some oranges in Nagpur for 32. He has to sell it off in Yeotmal. He is able to sell off all the oranges in Yeotmal and on reflection finds that he has made a profit equal to the cost price of 40 oranges. How many oranges did RFO Tripathi buy?

Let the cost price of one orange be Rs. x, the total number of oranges be n, and the selling price of one orange be Rs. y. The total cost price is nx and the total selling price is ny. The profit is given as 40x, so the equation becomes ny - nx = 40x, or x(ny/x - n) = 40x. Because the individual cost price x and the selling price y are not provided, the exact number of oranges n cannot be determined from this equation. The result is that the number of oranges cannot be determined.

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