The price of milk was first increased by 10% and then decreased by 20%.What is the net percentage change in final price of milk?

Let's assume the initial price of the milk is $100 for simplicity.

Step 1: Increase by 10% The price of the milk is increased by 10%. So, the new price is 100 + 10% of 100 = $110.

Step 2: Decrease by 20% Now, the price of the milk is decreased by 20%. So, the new price is 110 - 20% of 110 = $88.

Step 3: Calculate the net percentage change The initial price of the milk was $100 and the final price is$88. So, the change in price is 88 - 100 = -$12.

To find the percentage change, we divide the change in price by the initial price and multiply by 100. So, the percentage change is (-12/100) * 100 = -12%.

So, the net percentage change in the final price of the milk is -12%. This means the final price of the milk is 12% less than the initial price.