This worked great thanks...
Now to throw a twist into the mix
if say a1 =i/c a2= a3 =i/c then the count is 2 this is fine
now the hard bit each of the three cells all have a fuel requirement so even if the a2 is blank it might be used for something else so still uses fuel.
What i need is to be able to only add the fuel cell call them d1 d2 d3 if they one have a value and two have i/c in cell a1:a3
can you fix this one..... Thinking caps on i have a stop watch hahah