Tamara and Amir shared a candy bar. Tamara ate two fifths. Amir ate two fifths. How much is left?
If Tamara and Amir ate 2 fifths each, they ate a total of 2 fifths + 2 fifths = <<2+2=4>>4 fifths.
If they shared a whole candy bar, then 4 fifths = 1 whole candy bar.
Therefore, nothing is left.