Question

explain why, if the price of something is increased by 10% and then the new price is reduced by 10%, the final price is less than the original price.

Answer 1

Let's say something costs 100 pounds. If the cost is increased by 10 percent then it goes to 110 pounds. 10 percent of 110 is 11 so 110-11 is 99 (less than earlier. There you go.