Rule of Alligation
When two or more quantities of different products are mixed together to produce a mixture of a mean value, the ratios of their amounts are inversely proportional to the differences of their values from the mean value. Please re read the above statement. Its the heart of our concept.
Confused? lets read this in simple words…
If the gradients are mixed in a ratio, then
We can represent the above statement as
(Cheaper Quantity) : (Dearer Quantity) = (d – m) : (m – c)