What I really want to know is what PA2's got against Trevor?
Another perspective - 0.5 means 5/10. Simplify to 1/2.
1/1=1
half of 1=1/2=.5
.5 = .5/1 = .5/1 X 2/2 = 1/2
that was probably more complicated than it needed to be.
"Change 0.5 to a fraction reduce if needed?"
Now THAT is the sort of math that Trevor would like!