Final answer:
Amit cannot gain a profit of 60% by selling any whole number of oranges for a rupee.
Step-by-step explanation:
To find out how many oranges Amit must sell for a rupee in order to gain a profit of 60%, we need to calculate the selling price per orange first.
Profit percentage = (Selling Price - Cost Price) / Cost Price * 100
60% = (Selling Price - 1) / 1 * 100
Selling Price - 1 = 60
Selling Price = 61
Now, to find the number of oranges Amit can sell for a rupee, we divide 1 by the selling price per orange:
Number of oranges = 1 / Selling Price per orange
Number of oranges = 1 / 61 = 0.0164 (approximately)
Therefore, Amit can sell approximately 0.0164 oranges for a rupee to gain a profit of 60%. Since we can't sell a fraction of an orange, the closest whole number answer is 0, which means Amit cannot gain the required profit of 60% by selling any whole number of oranges for a rupee. The correct answer is option b. 7.