Originally Posted by

**Pugwash9** For unrealeted reasons I prefer to do calclations using the inverse of numbers, but the original setting of such on the non-inverse.

For Example..

Two Numbers 2 & 5, the point betwwen these numbers I require is 3.20. This being 40% of the difference beteween the two numbers plus the lower figure (5-2)*0.40+2.

So with the inverse :- 2 [0.50] 5 [0.20]. 0.50-((0.50-0.20)*0.40) =0.38 : I had expected that 1/0.38 would yield 3.2 and not 2.63?

Its got to be something basic - but its doing my head in.