Mathematics
If the cost of 9 pens is ₹ 369, the cost of one dozen pens of the same make will be:
₹ 42
₹ 429
₹ 942
₹ 492
Direct & Inverse Variations
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Answer
Let the cost of one dozen pens be x.
| Pens | Cost |
|---|---|
| 9 | 369 |
| 12 | x |
Since it is a case of direct variation.
Hence, option 4 is the correct option.
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