The Rule of Alligation (Cross Method)
Alligation का Rule — Cross Method
title
The Rule of Alligation (Cross Method)
- Mixture & Alligation
- The Rule of Alligation (Cross Method)
Hello दोस्तों! MeraExam की एक और class में आपका स्वागत है। आज का topic है — Alligation का Rule — Cross Method। बिलकुल zero से, एकदम आसान भाषा में। चलिए शुरू करते हैं!
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Interactive — learn by doing. Drag, tap and explore to build the intuition.
The alligation cross
Each quantity is proportional to the FAR gap — how far the OTHER price sits from the mean. Slide the mean and watch the ratio swing.
Cheaper
30
Dearer
40
mean 34
6
cheaper qty
|40 − 34|
4
dearer qty
|34 − 30|
cheaper : dearer = (40 − 34) : (34 − 30) = 6 : 4
3 : 2
More of whichever price the mean sits closer to. Here the mean is nearer the cheaper price.
💡 Works for any weighted average — prices, wages, marks, speeds, milk-water strength. Strip profit to cost first if a mixture is sold.