Berry Delicious is a popular shop that sells chocolate-covered strawberries. Last year, the shop used 6,540 kilograms of strawberries to make its treats. This year, the shop used 13,080 kilograms. What is the percent of increase in the amount of strawberries used annually?
well first let's find out how much a 100% increase would be. 6,540 + 6,540(when trying to find a 100% change add the number to itself) = 13,080. that gets the answer, so there is no need to continue.