Duplicate, triplicate, sub-duplicate, sub-triplicate, compounded ratios
Shaalaa.com | Ratio and Proportion Part 1 (Ratio)
if `x/a = y/b = z/c` prove that `(ax - by)/((a + b)(x - y)) + (by - cz)/((b + c)(y - z)) + (cz - az)/((c + a)(z - x)) = 3`
In a mixture of 126 kg of milk and water, milk and water are in ratio 5 : 2. How much water must be added to the mixture to make this ratio 3 : 2?