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3-pieces of pastries costs Rs. 345. What is the cost of one dozen pastries?
  • a)
    Rs. 1320
  • b)
    Rs. 1480
  • c)
    Rs. 1420
  • d)
    Rs. 1380
Correct answer is option 'D'. Can you explain this answer?
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3-pieces of pastries costs Rs. 345. What is the cost of one dozen past...
 Cost of 3 pieces = 345
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3-pieces of pastries costs Rs. 345. What is the cost of one dozen past...
Understanding the Cost of Pastries
To find the cost of one dozen pastries based on the given information, let's break down the problem step by step.
Step 1: Cost of 3 Pastries
- The total cost for 3 pastries is Rs. 345.
Step 2: Cost of 1 Pastry
- To find the cost of one pastry, divide the total cost by the number of pastries:
- Cost of 1 pastry = Total cost / Number of pastries
- Cost of 1 pastry = Rs. 345 / 3
- Cost of 1 pastry = Rs. 115
Step 3: Cost of 1 Dozen Pastries
- A dozen consists of 12 pastries.
- To find the cost of a dozen pastries, multiply the cost of one pastry by 12:
- Cost of 12 pastries = Cost of 1 pastry x 12
- Cost of 12 pastries = Rs. 115 x 12
- Cost of 12 pastries = Rs. 1380
Conclusion
- Therefore, the cost of one dozen pastries is Rs. 1380.
- The correct option is 'D'.
This method allows you to systematically determine the cost of a larger quantity based on the price of a smaller quantity. Always remember to perform the calculations carefully to ensure accuracy!
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