ProportionsOf ?

By Claudio Guirunas on AppTrack Ninja.

Rule of Three Solver

Cross-multiplication or Means-Extremes Property of Proportions: In maths we say: The product of the means is equal to the product of the extremes: ∴ x:z = y:w => x.w = z.y This APP uses the Rule of Three to calculates the ratio between values. For example, you can calculate whether it's worth buying a promotional product like this one: "Buy 70gr of biscuit for €4.98 or 140gr for € 9.97". Would not it be more advantageous to buy 2 of 70g instead of 1 package of 140g? Well, you can draw your own conclusions using the app for a multitude of calculations. Basically, the entire world around your i…

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