A man bought a mobile phone for 12000 and sold it for 9000. Find his loss percent

The loss can be found by subtracting the selling price from the cost price:

Loss = 12000 - 9000 = 3000

The loss percentage can be found by dividing the loss by the cost price and then multiplying by 100:
Loss percentage = (3000 / 12000) * 100 = 25%

Therefore, the man's loss percentage is 25%.

To find the loss percentage, we need to find the loss amount and divide it by the cost price, then multiply by 100 to get the percentage.

Loss amount = Cost Price - Selling Price

Let's calculate the loss amount first:

Loss amount = 12000 - 9000 = 3000

Now, let's calculate the loss percentage:

Loss percentage = (Loss amount / Cost Price) * 100

Loss percentage = (3000 / 12000) * 100

Loss percentage = 0.25 * 100

Loss percentage = 25%

So, the man faced a loss of 25%.