A boy boys 9 Apple a boy boys 9 Appl a boy buys 9 Apple 4 rupees 9.60 and sells them at 11 for rupees 12 find his percent gain or loss

I don't understand.

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well, your posting is rather confusing. If he bought them at 9 for 9.60 and sold them at 11 for 12.00 then

his unit cost is 9.60/9 = 1.0667
his unit revenue is 12/11 = 1.0909

1.0909/1.0667 = 1.0226 = 2.26% profit

If I read the facts wrong, fix things and then follow my steps to the correct answer.

To find the percentage gain or loss, we need to calculate the difference between the selling price and the cost price.

In this case, the boy bought 9 apples for 4 rupees and 9.60. Therefore, the cost price of each apple is (4.60 / 9) rupees.

The boy then sells each apple for 11 rupees, which gives a selling price of 9 * 11 = 99 rupees.

Now, we need to calculate the difference between the selling price and the cost price:

Profit = Selling Price - Cost Price
Profit = 99 - 4.60
Profit = 94.40 rupees

To find the percentage gain or loss, we use the formula:

Percentage Gain/Loss = (Profit / Cost Price) * 100

Percentage Gain/Loss = (94.40 / 4.60) * 100
Percentage Gain/Loss = 2052.17%

Therefore, the boy gained approximately 2052.17% on the transaction.