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?
How many new crayons are there? ** New:120/3=<<120/3=40>>40 crayons
How many broken crayons are there? ** Broken:120(.20)=24 crayons
How many slightly used crayons are there? ** Slightly Used:120-40-24=<<120-40-24=56>>56 crayons
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