Question
Draw Average Variable Cost (AVC), Average Total Cost (ATC) and Marginal Cost (MC) curves in a single diagram. State the relation between MC curve and AVC and ATC curves.

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| Price(₹) | Supply of Firm A | Supply of Firm B | Supply of Firm C | Market Supply MS = SA + SB + SC |
| 10 | 0 | 25 | -- | 35 |
| 20 | 10 | 30 | -- | 60 |
| 30 | 20 | 35 | -- | 85 |
| 40 | 30 | 40 | -- | 110 |
| 50 | 40 | 45 | -- | 135 |
| 60 | 50 | 50 | -- | 160 |
| Output (Units) | 1 | 2 | 3 | 4 |
| Marginal Cost (₹) | 10 | 19 | 29 | 40 |
| Output (Units) | 1 | 2 | 3 |
| Average Cost (₹) | 160 | 96 | 80 |
| Price (P) (₹) | 6 | 7 | 8 |
| Units sold (Q) | 5 | 4 | 3 |