Verified Answer :

1/2+1/2=2/2=1 so 1/2 was eaten and the other half was leftovers.

Answer:  \(\dfrac{1}{2}=50\%\) of pie he eat in all.

Step-by-step explanation:

Since we have given that

Let the total pie is represented by 1.

Part of pie of left over is eaten by Tom is given by \(\dfrac{1}{2}\)

We need to find the part of  left over.

Part of left over would be

\(1-\dfrac{1}{2}\\\\=\dfrac{2-1}{2}\\\\=\dfrac{1}{2}\)

Hence, \(\dfrac{1}{2}=50\%\) of pie he eat in all.