$36\div(1-\dfrac{5}{8})=96$ 
Sanjay let me finish his box of mints.  He had eaten $$\frac{5}{8}$$ of them.  If $$36$$ mints were left for me, how many mints were there in the box at the start? 

a) $$96$$ 
b) $$58$$ 
c) $$68$$ 
d) $$36$$ 
e) $$56$$ 