Kim has 4 dozen shirts.  She lets her sister have 1/3 of them.  How many shirts does she have left?
How many shirts did Kim have to start with? ** She had 4*12=<<4*12=48>>48 shirts to start with
How many shirts does Kim give away? ** She gives away 48/3=<<48/3=16>>16
How many shirts does Kim have left? ** So she has 48-16=<<48-16=32>>32 left
#### 32