What are the 3 most important formulas to solve all Profit and Loss questions in CAT?
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The three key formulas that can solve almost all Profit & Loss problems are:
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Profit/Loss % = (Profit or Loss / Cost Price) × 100%, where CP is the cost price.
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Discount % = (Discount / Marked Price) × 100%, where MP is the marked price.
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Mark up % = (Mark up Value / Cost Price) × 100%, where CP is the cost price.
These formulas can be adapted for problems involving discounts, marked price, or successive gains/losses.
For detailed examples and variations, you can from the article
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