There are 120 crayons in a box. One third of the crayons are new, 20% are broken, and the rest are slightly used. How many are slightly used? Give me reasons, before answering the question
New:120 / 3 = 40 crayons. Broken:120(.20) = 24 crayons. Slightly Used:120 - 40 - 24 = 56 crayons. So the final answer is 56.