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12 pencils cost Rs. 30. How much will be the cost of 4 pencils.
  • a)
    Rs. 8                        
  • b)
    Rs. 9
  • c)
    Rs. 10                                   
  • d)
    Rs. 12
  • e)
    None of these
Correct answer is option 'C'. Can you explain this answer?
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12 pencils cost Rs. 30. How much will be the cost of 4 pencils.a)Rs. 8...
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12 pencils cost Rs. 30. How much will be the cost of 4 pencils.a)Rs. 8...
Problem:

12 pencils cost Rs. 30. How much will be the cost of 4 pencils?

Solution:

Given,

Cost of 12 pencils = Rs. 30

To find,

Cost of 4 pencils

Let's solve it step by step,

Step 1:

We can find the cost of 1 pencil by dividing the total cost by the number of pencils.

Cost of 1 pencil = Total cost / Number of pencils

Cost of 1 pencil = 30 / 12

Cost of 1 pencil = Rs. 2.5

Step 2:

Now we can find the cost of 4 pencils by multiplying the cost of 1 pencil by 4.

Cost of 4 pencils = 2.5 x 4

Cost of 4 pencils = Rs. 10

Therefore, the cost of 4 pencils is Rs. 10.

Hence, option (c) Rs. 10 is the correct answer.
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12 pencils cost Rs. 30. How much will be the cost of 4 pencils.a)Rs. 8b)Rs. 9c)Rs. 10d)Rs. 12e)None of theseCorrect answer is option 'C'. Can you explain this answer?
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